Patents by Inventor Annamaria Naggi
Annamaria Naggi has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).
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Patent number: 11370848Abstract: A glycosaminoglycan derivative endowed with heparanase inhibitory activity and antitumor activity, bearing carboxylate groups in positions 2 and 3 of at least part of the glycosaminoglycan residues, and to the process for preparing the same. The glycosaminoglycan derivatives of the present invention are generated starting from natural or synthetic glycosaminoglycans, preferably heparin or low molecular weight heparin, optionally 2-O- and 2-N-desulfated by two steps of oxidation. By the first oxidation, adjacent dials and optionally adjacent OH/NH2 of the glycosaminoglycan residues are converted to aldehydes and by the second oxidation said dialdehydes are converted to carboxylate groups. The first oxidation preferably leads to the cleavage of C2-C3 linkage of the ring of oxidable residues. The invention relates to a process for the preparation of said glycosaminoglycan derivatives and to their use as active ingredients of medicaments.Type: GrantFiled: February 21, 2020Date of Patent: June 28, 2022Assignee: Novahealth Biosystems, LLCInventors: Giangiacomo Torri, Annamaria Naggi
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Patent number: 11332548Abstract: A glycosaminoglycan derivative endowed with heparanase inhibitory activity and antitumor activity, bearing carboxylate groups in positions 2 and 3 of at least part of the glycosaminoglycan residues, and to the process for preparing the same. The glycosaminoglycan derivatives of the present invention are generated starting from natural or synthetic glycosaminoglycans, preferably heparin or low molecular weight heparin, optionally 2-O- and 2-N-desulfated by two steps of oxidation. By the first oxidation, adjacent dials and optionally adjacent OH/NH2 of the glycosaminoglycan residues are converted to aldehydes and by the second oxidation said dialdehydes are converted to carboxylate groups. The first oxidation preferably leads to the cleavage of C2-C3 linkage of the ring of oxidable residues. The invention relates to a process for the preparation of said glycosaminoglycan derivatives and to their use as active ingredients of medicaments.Type: GrantFiled: February 4, 2020Date of Patent: May 17, 2022Assignee: Novahealth Biosystems, LLCInventors: Giangiacomo Torri, Annamaria Naggi
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Patent number: 11248063Abstract: A glycosaminoglycan derivative which is obtainable by a process that includes the steps of N-desulfation of from 25% to 100% of the N-sulfated residues of a glycosaminoglycan, and oxidation, by periodate at a pH of from 5.5 to 10.0, of from 25% to 100% of the 2-N-, 3-O-non-sulfated glucosamine residues, and of the 2-O-non-sulfated uronic acid residues of said glycosaminoglycan, under conditions effective to convert adjacent diols and adjacent OH/NH2 to aldehydes. The process further includes reduction, by sodium borohydride, of said oxidized glycosaminoglycan, under conditions effective to convert said aldehydes to alcohols, where the glycosaminoglycan is heparin, low molecular weight heparin, heparan sulfate or fractions thereof.Type: GrantFiled: March 18, 2020Date of Patent: February 15, 2022Assignee: Novahealth Biosystems, LLCInventors: Giangiacomo Torri, Annamaria Naggi
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Patent number: 11242412Abstract: A method for the qualification and selection of manufacturing processes, raw materials, intermediates and batch production of pentosan polysulfate based on the identification of acetylated monosaccharide units, including units of xylose substituted with 4-O-methyl-glucuronic which also lead the acetyl group, as structural characterizing units, is disclosed.Type: GrantFiled: July 30, 2019Date of Patent: February 8, 2022Assignee: Chemi S.P.A.Inventors: Lorenzo De Ferra, Annamaria Naggi, Maurizio Zenoni, Barbara Pinto
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Publication number: 20210332162Abstract: A glycosaminoglycan derivative which is obtainable by a process that includes the steps of N-desulfation of from 25% to 100% of the N-sulfated residues of a glycosaminoglycan, and oxidation, by periodate at a pH of from 5.5 to 10.0, of from 25% to 100% of the 2-N-, 3-O-non-sulfated glucosamine residues, and of the 2-O-non-sulfated uronic acid residues of said glycosaminoglycan, under conditions effective to convert adjacent diols and adjacent OH/NH2 to aldehydes. The process further includes reduction, by sodium borohydride, of said oxidized glycosaminoglycan, under conditions effective to convert said aldehydes to alcohols, where the glycosaminoglycan is heparin, low molecular weight heparin, heparan sulfate or fractions thereof.Type: ApplicationFiled: March 18, 2020Publication date: October 28, 2021Inventors: Giangiacomo Torri, Annamaria Naggi
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Publication number: 20210054108Abstract: A glycosaminoglycan derivative which is obtainable by a process that includes the steps of N-desulfation of from 25% to 100% of the N-sulfated residues of a glycosaminoglycan, and oxidation, by periodate at a pH of from 5.5 to 10.0, of from 25% to 100% of the 2-N-, 3-O-non-sulfated glucosamine residues, and of the 2-O-non-sulfated uronic acid residues of said glycosaminoglycan, under conditions effective to convert adjacent diols and adjacent OH/NH2 to aldehydes. The process further includes reduction, by sodium borohydride, of said oxidized glycosaminoglycan, under conditions effective to convert said aldehydes to alcohols, where the glycosaminoglycan is heparin, low molecular weight heparin, heparan sulfate or fractions thereof.Type: ApplicationFiled: March 18, 2020Publication date: February 25, 2021Inventors: Giangiacomo Torri, Annamaria Naggi
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Patent number: 10875936Abstract: The invention relates to N-desulfated and optionally 2-O-desulfated glycosaminoglycan derivatives, wherein at least part of the adjacent diols and OH/NH2 have been converted into the corresponding aldehyde, which aldehydes have been then reduced to the corresponding alcohol. These products are endowed with heparanase inhibitory activity and anti-tumor activity. Said glycosaminoglycan derivatives are obtained from natural or synthetic glycosaminoglycan, preferably from unfractionated heparin, low molecular weight heparins (LMWHs), heparan sulfate or derivatives thereof. The invention further relates to the process for preparation of the same and further to their use as active ingredients of medicaments, also in combination with known established drugs or treatments. The present invention further relates to a process for breaking the C2-C3 linkage of glucosamine residues of a glycosaminoglycan by oxidation of said glycosaminoglycan.Type: GrantFiled: October 23, 2014Date of Patent: December 29, 2020Assignee: Novahealth Biosystems, LLCInventors: Giangiacomo Torri, Annamaria Naggi
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Patent number: 10822430Abstract: The invention relates to glycosaminoglycan derivatives, endowed with heparanase inhibitory activity and antitumor activity, bearing carboxylate groups in positions 2 and 3 of at least part of the glycosaminoglycan residues, and to the process for preparing the same. The glycosaminoglycan derivatives of the present invention are generated starting from natural or synthetic glycosaminoglycans, preferably heparin or low molecular weight heparin, optionally 2-O- and 2N-desulfated by two steps of oxidation. By the first oxidation, adjacent diols and optionally adjacent OH/NH2 of the glycosaminoglycan residues are converted to aldehydes and by the second oxidation said dialdehydes are converted to carboxylate groups. The first oxidation preferably leads to the cleavage of C2-C3 linkage of the ring of oxidable residues. The invention further relates to a process for the preparation of said glycosaminoglycan derivatives and further to their use as active ingredients of medicaments.Type: GrantFiled: October 22, 2014Date of Patent: November 3, 2020Assignee: Novahealth Biosystems, LLCInventors: Giangiacomo Torri, Annamaria Naggi
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Publication number: 20200216577Abstract: A glycosaminoglycan derivative which is obtainable by a process that includes the steps of N-desulfation of from 25% to 100% of the N-sulfated residues of a glycosaminoglycan, and oxidation, by periodate at a pH of from 5.5 to 10.0, of from 25% to 100% of the 2-N-, 3-O-non-sulfated glucosamine residues, and of the 2-O-non-sulfated uronic acid residues of said glycosaminoglycan, under conditions effective to convert adjacent diols and adjacent OH/NH2 to aldehydes. The process further includes reduction, by sodium borohydride, of said oxidized glycosaminoglycan, under conditions effective to convert said aldehydes to alcohols, where the glycosaminoglycan is heparin, low molecular weight heparin, heparan sulfate or fractions thereof.Type: ApplicationFiled: March 18, 2020Publication date: July 9, 2020Inventors: Giangiacomo Torri, Annamaria Naggi
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Publication number: 20200190224Abstract: A glycosaminoglycan derivative endowed with heparanase inhibitory activity and antitumor activity, bearing carboxylate groups in positions 2 and 3 of at least part of the glycosaminoglycan residues, and to the process for preparing the same. The glycosaminoglycan derivatives of the present invention are generated starting from natural or synthetic glycosaminoglycans, preferably heparin or low molecular weight heparin, optionally 2-O- and 2-N-desulfated by two steps of oxidation. By the first oxidation, adjacent dials and optionally adjacent OH/NH2 of the glycosaminoglycan residues are converted to aldehydes and by the second oxidation said dialdehydes are converted to carboxylate groups. The first oxidation preferably leads to the cleavage of C2-C3 linkage of the ring of oxidable residues. The invention relates to a process for the preparation of said glycosaminoglycan derivatives and to their use as active ingredients of medicaments.Type: ApplicationFiled: February 21, 2020Publication date: June 18, 2020Inventors: Giangiacomo Torri, Annamaria Naggi
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Publication number: 20200172636Abstract: A glycosaminoglycan derivative endowed with heparanase inhibitory activity and antitumor activity, bearing carboxylate groups in positions 2 and 3 of at least part of the glycosaminoglycan residues, and to the process for preparing the same. The glycosaminoglycan derivatives of the present invention are generated starting from natural or synthetic glycosaminoglycans, preferably heparin or low molecular weight heparin, optionally 2-O- and 2-N-desulfated by two steps of oxidation. By the first oxidation, adjacent dials and optionally adjacent OH/NH2 of the glycosaminoglycan residues are converted to aldehydes and by the second oxidation said dialdehydes are converted to carboxylate groups. The first oxidation preferably leads to the cleavage of C2-C3 linkage of the ring of oxidable residues. The invention relates to a process for the preparation of said glycosaminoglycan derivatives and to their use as active ingredients of medicaments.Type: ApplicationFiled: February 4, 2020Publication date: June 4, 2020Inventors: Giangiacomo Torri, Annamaria Naggi
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Publication number: 20200010578Abstract: A method for the qualification and selection of manufacturing processes, raw materials, intermediates and batch production of pentosan polysulfate based on the identification of acetylated monosaccharide units, including units of xylose substituted with 4-O-methyl-glucuronic which also lead the acetyl group, as structural characterizing units, is disclosed.Type: ApplicationFiled: July 30, 2019Publication date: January 9, 2020Applicant: Chemi S.P.A.Inventors: Lorenzo De Ferra, Annamaria Naggi, Maurizio Zenoni, Barbara Pinto
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Patent number: 10407515Abstract: A method for the qualification and selection of manufacturing processes, raw materials, intermediates and batch production of pentosan polysulfate based on the identification of acetylated monosaccharide units, including units of xylose substituted with 4-O-methyl-glucuronic which also lead the acetyl group, as structural characterizing units, is disclosed.Type: GrantFiled: January 23, 2014Date of Patent: September 10, 2019Assignee: CHEMI S.P.A.Inventors: Lorenzo De Ferra, Annamaria Naggi, Maurizio Zenoni, Barbara Pinto
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Publication number: 20170233501Abstract: The invention relates to glucosaminoglycan derivatives, endowed with heparanase inhibitory activity and antitumor activity, bearing carboxylate groups in positions 2 and 3 of at least part of the glucosaminoglycan residues, and to the process for preparing the same. The glucosaminoglycan derivatives of the present invention are generated starting from natural or synthetic glucosaminoglycans, preferably heparin or low molecular weight heparin, optionally 2-O- and 2N-desulfated by two steps of oxidation. By the first oxidation, adjacent diols and optionally adjacent OH/NH2 of the glucosaminoglycan residues are converted to aldehydes and by the second oxidation said dialdehydes are converted to carboxylate groups. The first oxidation preferably leads to the cleavage of C2-C3 linkage of the ring of oxidable residues. The invention further relates to a process for the preparation of said glucosaminoglycan derivatives and further to their use as active ingredients of medicaments.Type: ApplicationFiled: October 22, 2014Publication date: August 17, 2017Inventors: Giangiacomo Torri, Annamaria Naggi
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Publication number: 20160297896Abstract: The invention relates to glucosaminoglycan derivatives, endowed with heparanase inhibitory activity and antitumor activity, bearing carboxylate groups in positions 2 and 3 of at least part of the glucosaminoglycan residues, and to the process for preparing the same. The glucosaminoglycan derivatives of the present invention are generated starting from natural or synthetic glucosaminoglycans, preferably heparin or low molecular weight heparin, optionally 2-O- and 2N-desulfated by two steps of oxidation. By the first oxidation, adjacent diols and optionally adjacent OH/NH2 of the glucosaminoglycan residues are converted to aldehydes and by the second oxidation said dialdehydes are converted to carboxylate groups. The first oxidation preferably leads to the cleavage of C2-C3 linkage of the ring of oxidable residues. The invention further relates to a process for the preparation of said glucosaminoglycan derivatives and further to their use as active ingredients of medicaments.Type: ApplicationFiled: October 22, 2014Publication date: October 13, 2016Inventors: Giangiacomo Torri, Annamaria Naggi
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Publication number: 20160237178Abstract: The invention relates to N-desulfated and optionally 2-O-desulfated glucosaminoglycan derivatives, wherein at least part of the adjacent diols and OH/NH2 have been converted into the corresponding aldehyde, which aldehydes have been then reduced to the corresponding alcohol. These products are endowed with heparanase inhibitory activity and anti-tumor activity. Said glucosaminoglycan derivatives are obtained from natural or synthetic glucosaminoglycan, preferably from unfractionated heparin, low molecular weight heparins (LMWHs), heparan sulfate or derivatives thereof. The invention further relates to the process for preparation of the same and further to their use as active ingredients of medicaments, also in combination with known established drugs or treatments. The present invention further relates to a process for breaking the C2-C3 linkage of glucosamine residues of a glucosaminoglycan by oxidation of said glucosaminoglycan.Type: ApplicationFiled: October 23, 2014Publication date: August 18, 2016Applicant: CENTRO ALTA TECNOLOGIA ISTITUTO DI RICERCHE CHIMICHE E BIOCHIMICHE "G.RONZONI" S.R.Inventors: Giangiacomo Torri, Annamaria Naggi
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Publication number: 20160002365Abstract: A method for the qualification and selection of manufacturing processes, raw materials, intermediates and batch production of pentosan polysulfate based on the identification of acetylated monosaccharide units, including units of xylose substituted with 4-O-methyl-glucuronic which also lead the acetyl group, as structural characterizing units, is disclosed.Type: ApplicationFiled: January 23, 2014Publication date: January 7, 2016Inventors: Lorenzo De Ferra, Annamaria Naggi, Maurizio Zenoni, Barbara Pinto
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Patent number: 8853387Abstract: The present invention is directed to sulfated oligosaccharides having 4, 5 or 6 saccharidic units and wherein a glycosidic bond between two saccharide units is substituted by a C—C bond, and wherein the sulfation degree expressed as percentage of OH groups substituted by a OSO3? group is comprised between 50 and 100%. The sulfated oligosaccharides according to the invention are useful as a drug, in particular in the treatment of angiogenesis, metastasis, and inflammation.Type: GrantFiled: July 9, 2009Date of Patent: October 7, 2014Assignee: Istituto di Ricerche Chimiche e Biochimiche “G. Ronzoni”Inventors: Giangiacomo Torri, Elena Vismara, Israel Vlodavsky, Annamaria Naggi
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Publication number: 20120232263Abstract: The present invention is directed to sulfated oligosaccharides having 4, 5 or 6 saccharidic units and wherein a glycosidic bond between two saccharide units is substituted by a C—C bond, and wherein the sulfation degree expressed as percentage of OH groups substituted by a OSO3? group is comprised between 50 and 100%. The sulfated oligosaccharides according to the invention are useful as a drug, in particular in the treatment of angiogenesis, metastasis, and inflammation.Type: ApplicationFiled: July 9, 2009Publication date: September 13, 2012Applicant: Istituto Scientifico Di Chimica E Biochimica "G" RInventors: Giangiacomo Torri, Elena Vismara, Israel Vlodavsky, Annamaria Naggi
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Publication number: 20080312575Abstract: The present invention regards the use of hemofilters for the removal of bacterial toxins (lipopolysaccharides) from the blood, said hemofilters comprising a solid support to which cyclodextrins are covalently bonded. The solid support can be a fabric or non-woven fabric or a polymeric resin obtained by means of cross-linking of the cyclodextrins with appropriate cross-linking agents, for example epichlorohydrin.Type: ApplicationFiled: July 27, 2006Publication date: December 18, 2008Inventors: Giorgio Graziani, Annamaria Naggi, Giangiacomo Torri