Patents by Inventor Pengcheng Mi
Pengcheng Mi 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: 11312744Abstract: A method for purifying a long chain polypeptide includes: 1) purification step: connecting two chromatographic columns in series to separate a crude product, in which the particle size of a packing in an upstream chromatographic column is larger than that in a downstream chromatographic column; optionally, the method further includes step 2): using the upstream chromatographic column in step 1) for a salt conversion, loading the target peak product obtained in step 1) and rinsing with 95-85% of the A2 and 5-15% of the B for 15-30 min for a desalination, wherein A2 phase is an acetic acid aqueous solution with a volume ratio of 0.05%-0.2%; B phase is an organic phase acetonitrile, and the detection wavelength is 230 nm.Type: GrantFiled: May 30, 2018Date of Patent: April 26, 2022Assignee: HYBIO PHARMACEUTICAL CO., LTD.Inventors: Chuanlong Yin, Pengcheng Mi, Anjin Tao, Jiancheng Yuan
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Publication number: 20210230216Abstract: A method for purifying a long chain polypeptide includes: 1) purification step: connecting two chromatographic columns in series to separate a crude product, in which the particle size of a packing in an upstream chromatographic column is larger than that in a downstream chromatographic column; optionally, the method further includes step 2): using the upstream chromatographic column in step 1) for a salt conversion, loading the target peak product obtained in step 1) and rinsing with 95-85% of the A2 and 5-15% of the B for 15-30 min for a desalination, wherein A2 phase is an acetic acid aqueous solution with a volume ratio of 0.05%-0.2%; B phase is an organic phase acetonitrile, and the detection wavelength is 230 nm.Type: ApplicationFiled: May 30, 2018Publication date: July 29, 2021Applicant: HYBIO PHARMACEUTICAL CO., LTD.Inventors: Chuanlong YIN, Pengcheng MI, Anjin TAO, Jiancheng YUAN
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Publication number: 20200277328Abstract: A method for preparing Lixisenatide. According to a peptide sequence structure of Lixisenatide peptide, specially protected serine dipeptide is used as a raw material and coupled into a peptide sequence. Because of a ring-shaped structure similar to that of proline is formed, the rotation of a peptide bond can be effectively prevented, the contraction of a peptide chain curling agent is suppressed, so that active functional groups are fully exposed, thereby facilitating the coupling of the amino acid, and reducing the occurrence of defects and other side effects.Type: ApplicationFiled: December 16, 2016Publication date: September 3, 2020Applicant: HYBIO PHARMACEUTICAL CO., LTD.Inventors: Xinliang CHEN, Pengcheng MI, Anjin TAO, Jiancheng YUAN
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Patent number: 10647742Abstract: Provided is a method for solid phase synthesis of Etelcalcetide, comprising synthesizing Etelcalcetide backbone peptide resin, removing the side chain protecting group of Cys in the peptide chain, and then activating the sulfydryl group of the Cys side chain on the peptide resin with 2,2?-dithiodipyridine and constructing a disulfide bond with L-Cys, such that a crude Etelcalcetide peptide is obtained by cleaving. The method does not require undergoing multi-step purification, the yield and purity of the obtained crude peptide are relatively high, and the total yield of the refined peptide after purification is greatly increased.Type: GrantFiled: December 20, 2016Date of Patent: May 12, 2020Assignee: HYBIO PHARMACEUTICAL CO., LTD.Inventors: Yonghan Chen, Pengcheng Mi, Anjin Tao, Jiancheng Yuan
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Patent number: 10442838Abstract: Disclosed is a method of synthesizing linaclotide through completely selective formation of three disulfide bonds, comprising the steps of: 1) synthesizing linaclotide precursor resin through solid-phase synthesis; 2) forming the first disulfide bond through solid phase oxidation; 3) forming the second disulfide bond through liquid phase oxidation; and 4) deprotecting methyl in the methyl-protected cysteine, and oxidatively coupling the third disulfide bond to obtain linaclotide. The method has mild reaction conditions with low cost, high yield and high purity product, is a simple and stable process and is suitable for large-scale production.Type: GrantFiled: December 15, 2016Date of Patent: October 15, 2019Assignee: HYBIO PHARMACEUTICAL CO., LTD.Inventors: Xueming Chen, Jingkang Wu, Pengcheng Mi, Anjin Tao, Jiancheng Yuan
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Patent number: 10399927Abstract: The present invention relates to a preparation method of a long-chain compound, which includes the following steps: (1) carrying out condensation reaction on H—R2 and R5N-Glu(OR4)—OR3, wherein, R3 is a carboxyl protecting group, R4 is a carboxyl activating group, and R5 is an amino protecting group; obtaining a compound of formula II; (2) removing carboxyl protecting group R3 and amino protecting group R5 of the compound shown in formula II to obtain a compound of formula III; (3) carrying out condensation reaction on the compound shown in formula III and to obtain a compound shown in formula I. The method reduces the time of deprotection, and all the reactions can be carried out in a solvent with low boiling point. The post-processing requires only simple washing and recrystallization to obtain the product with higher purity, so the method is suitable for large-scale production.Type: GrantFiled: February 29, 2016Date of Patent: September 3, 2019Assignee: HYBIO PHARMACEUTICAL CO., LTD.Inventors: Youjin Chen, Pengcheng Mi, Anjin Tao, Jiancheng Yuan
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Publication number: 20190010204Abstract: A method for preparing Sermaglutide. Amino acid protected by Fmoc-Lys(Alloc)-OH is used as a raw material, and protection is carried out by selecting Pd(PPh3)4. In one aspect, the operation process is simple, one or two times of elimination reactions are required only, each time lasts 10 min to 30 min, and no side reaction occurs, and the operation process is safe, so that the preparation method is suitable for expanding production. The risk of His racemization can be reduced to the greatest extent in the process by using Boc-His(Boc)-OH.DCHA and Boc-His(Trt)-OH as raw materials. The synthesis efficiency is improved by performing coupling by using special segments.Type: ApplicationFiled: December 16, 2016Publication date: January 10, 2019Applicant: HYBIO PHARMACEUTICAL CO., LTD.Inventors: Xinliang CHEN, Pengcheng MI, Anjin TAO, Jiancheng YUAN
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Publication number: 20190010185Abstract: Provided is a method for solid phase synthesis of Etelcalcetide, comprising synthesizing Etelcalcetide backbone peptide resin, removing the side chain protecting group of Cys in the peptide chain, and then activating the sulfydryl group of the Cys side chain on the peptide resin with 2,2?-dithiodipyridine and constructing a disulfide bond with L-Cys, such that a crude Etelcalcetide peptide is obtained by cleaving. The method does not require undergoing multi-step purification, the yield and purity of the obtained crude peptide are relatively high, and the total yield of the refined peptide after purification is greatly increased.Type: ApplicationFiled: December 20, 2016Publication date: January 10, 2019Applicant: HYBIO PHARMACEUTICAL CO., LTD.Inventors: Yonghan CHEN, Pengcheng MI, Anjin TAO, Jiancheng YUAN
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Publication number: 20180371022Abstract: Disclosed is a method of synthesizing linaclotide through completely selective formation of three disulfide bonds, comprising the steps of: 1) synthesizing linaclotide precursor resin through solid-phase synthesis; 2) forming the first disulfide bond through solid phase oxidation; 3) forming the second disulfide bond through liquid phase oxidation; and 4) deprotecting methyl in the methyl-protected cysteine, and oxidatively coupling the third disulfide bond to obtain linaclotide. The method has mild reaction conditions with low cost, high yield and high purity product, is a simple and stable process and is suitable for large-scale production.Type: ApplicationFiled: December 15, 2016Publication date: December 27, 2018Applicant: HYBIO PHARMACEUTICAL CO., LTD.Inventors: Xueming CHEN, Jingkang WU, Pengcheng MI, Anjin TAO, Jiancheng YUAN
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Publication number: 20180370904Abstract: The present invention relates to a preparation method of a long-chain compound, which includes the following steps: (1) carrying out condensation reaction on H—R2 and R5N-Glu(OR4)—OR3, wherein, R3 is a carboxyl protecting group, R4 is a carboxyl activating group, and R5 is an amino protecting group; obtaining a compound of formula II; (2) removing carboxyl protecting group R3 and amino protecting group R5 of the compound shown in formula II to obtain a compound of formula III; (3) carrying out condensation reaction on the compound shown in formula III and to obtain a compound shown in formula I. The method reduces the time of deprotection, and all the reactions can be carried out in a solvent with low boiling point. The post-processing requires only simple washing and recrystallization to obtain the product with higher purity, so the method is suitable for large-scale production.Type: ApplicationFiled: February 29, 2016Publication date: December 27, 2018Applicant: HYBIO PHARMACEUTICAL CO., LTD.Inventors: Youjin CHEN, Pengcheng MI, Anjin TAO, Jiancheng YUAN
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Patent number: 9637517Abstract: Disclosed in the present invention is a method for preparing Exenatide. Serine resin is obtained through a first coupling of serine and resin and successively with amino acids through a second coupling to obtain a peptide resin with a sequence as shown by SEQ ID No. 1; Exenatide resin is obtained through a third coupling of histidine containing a protecting group or salts thereof and the peptide resin with a sequence as shown by SEQ ID No. 1, then it is cracked and purified to obtain purified Exenatide peptide. The method for preparing Exenatide of the present invention inhibits the formation of D-His-Exenatide, and thereby improves the yield and purity of Exenatide.Type: GrantFiled: October 31, 2012Date of Patent: May 2, 2017Assignee: HYBIO PHARMACEUTICAL CO., LTD.Inventors: Pengcheng Mi, Jian Liu, Yaping Ma, Jiancheng Yuan
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Publication number: 20150232503Abstract: Disclosed in the present invention is a method for preparing Exenatide. Serine resin is obtained through a first coupling of serine and resin and successively with amino acids through a second coupling to obtain a peptide resin with a sequence as shown by SEQ ID No. 1; Exenatide resin is obtained through a third coupling of histidine containing a protecting group or salts thereof and the peptide resin with a sequence as shown by SEQ ID No. 1, then it is cracked and purified to obtain purified Exenatide peptide. The method for preparing Exenatide of the present invention inhibits the formation of D-His-Exenatide, and thereby improves the yield and purity of Exenatide.Type: ApplicationFiled: October 31, 2012Publication date: August 20, 2015Applicant: HYBIO PHARMACEUTICAL CO., LTD.Inventors: Pengcheng Mi, Jian Liu, Yaping Ma, Jiancheng Yuan