Patents by Inventor Takeshi Hamatani
Takeshi Hamatani 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: 7645599Abstract: A method for producing optically active alcohols is provided. Optically active alcohols are useful intermediates in pharmaceutical production. The method of the present invention enables simple and efficient production of optically active alcohols with a high optical purity. According to the production method disclosed, optically active alcohols are produced via asymmetric reduction of 3-quinuclidinone using tropinone reductase-I. For example, the use of tropinone reductase-I derived from plants like Datura stramonium and Hyoscyamus niger allows the production of high optical purity (R)-3-quinuclidinol.Type: GrantFiled: June 13, 2005Date of Patent: January 12, 2010Assignee: Daicel Chemical Industries, Ltd.Inventors: Hiroaki Yamamoto, Momoko Ueda, Ritsuzui Pan, Takeshi Hamatani
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Patent number: 7208621Abstract: A novel monomethyl malonate derivative is represented by following Formula (I): wherein X is a halogen atom; and Me is methyl group. This compound can be prepared by the steps of (A) reacting a benzyl halide derivative represented by following Formula (II): wherein X and Y may be the same as or different from each other and are each a halogen atom, with dimethyl malonate in the presence of a base to yield a dimethyl malonate derivative represented by following Formula (III): wherein X and Me have the same meanings as defined above; and (B) hydrolyzing the dimethyl malonate derivative of Formula (III). The compound is useful in the production of an indanonecarboxylic acid ester having a halogen atom on the indanone ring.Type: GrantFiled: July 14, 2006Date of Patent: April 24, 2007Assignee: Daicel Chemical Industries, Ltd.Inventors: Satoru Nose, Kieko Sano, Takeshi Hamatani
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Publication number: 20060252957Abstract: A novel monomethyl malonate derivative is represented by following Formula (I): wherein X is a halogen atom; and Me is methyl group. This compound can be prepared by the steps of (A) reacting a benzyl halide derivative represented by following Formula (II): wherein X and Y may be the same as or different from each other and are each a halogen atom, with dimethyl malonate in the presence of a base to yield a dimethyl malonate derivative represented by following Formula (III): wherein X and Me have the same meanings as defined above; and (B) hydrolyzing the dimethyl malonate derivative of Formula (III). The compound is useful in the production of an indanonecarboxylic acid ester having a halogen atom on the indanone ring.Type: ApplicationFiled: July 14, 2006Publication date: November 9, 2006Inventors: Satoru Nose, Kieko Sano, Takeshi Hamatani
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Patent number: 7109369Abstract: A novel monomethyl malonate derivative is represented by following Formula (I): wherein X is a halogen atom; and Me is methyl group. This compound can be prepared by the steps of (A) reacting a benzyl halide derivative represented by following Formula (II): wherein X and Y may be the same as or different from each other and are each a halogen atom, with dimethyl malonate in the presence of a base to yield a dimethyl malonate derivative represented by following Formula (III): wherein X and Me have the same meanings as defined above; and (B) hydrolyzing the dimethyl malonate derivative of Formula (III). The compound is useful in the production of an indanonecarboxylic acid ester having a halogen atom on the indanone ring.Type: GrantFiled: November 1, 2004Date of Patent: September 19, 2006Assignee: Daicel Chemical Industries, Ltd.Inventors: Satoru Nose, Kieko Sano, Takeshi Hamatani
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Publication number: 20050227336Abstract: A method for producing optically active alcohols is provided. Optically active alcohols are useful intermediates in pharmaceutical production. The method of the present invention enables simple and efficient production of optically active alcohols with a high optical purity. According to the production method disclosed, optically active alcohols are produced via asymmetric reduction of 3-quinuclidinone using tropinone reductase-I. For example, the use of tropinone reductase-I derived from plants like Datura stramonium and Hyoscyamus niger allows the production of high optical purity (R)-3-quinuclidinol as shown in Formula (1) below.Type: ApplicationFiled: June 13, 2005Publication date: October 13, 2005Applicant: Daicel Chemical Industries, Ltd.Inventors: Hiroaki Yamamoto, Momoko Ueda, Ritsuzui Pan, Takeshi Hamatani
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Patent number: 6916946Abstract: Disclosed is a novel acid halide derivative represented by Formula (I): wherein X and Y may be the same or different and are each a halogen atom; and R is a lower alkyl group. By cyclizing the acid halide derivative of Formula (I) in the presence of a catalyst, an indanonecarboxylic acid ester represented by Formula (VI): wherein X and R are as defined above, is produced. Such indanonecarboxylic acid esters are useful as intermediates for insecticides.Type: GrantFiled: March 11, 2004Date of Patent: July 12, 2005Assignee: Daicel Chemical Industries, Ltd.Inventors: Satoru Nose, Kieko Sano, Syu-ichi Yamagiwa, Takeshi Hamatani
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Publication number: 20050124825Abstract: A novel monomethyl malonate derivative is represented by following Formula (I): wherein X is a halogen atom; and Me is methyl group. This compound can be prepared by the steps of (A) reacting a benzyl halide derivative represented by following Formula (II): wherein X and Y may be the same as or different from each other and are each a halogen atom, with dimethyl malonate in the presence of a base to yield a dimethyl malonate derivative represented by following Formula (III): wherein X and Me have the same meanings as defined above; and (B) hydrolyzing the dimethyl malonate derivative of Formula (III). The compound is useful in the production of an indanonecarboxylic acid ester having a halogen atom on the indanone ring.Type: ApplicationFiled: November 1, 2004Publication date: June 9, 2005Inventors: Satoru Nose, Kieko Sano, Takeshi Hamatani
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Publication number: 20050043568Abstract: Disclosed is a novel acid halide derivative represented by Formula (I): wherein X and Y may be the same or different and are each a halogen atom; and R is a lower alkyl group. By cyclizing the acid halide derivative of Formula (I) in the presence of a catalyst, an indanonecarboxylic acid ester represented by Formula (VI): wherein X and R are as defined above, is produced. Such indanonecarboxylic acid esters are useful as intermediates for insecticides.Type: ApplicationFiled: March 11, 2004Publication date: February 24, 2005Inventors: Satoru Nose, Kieko Sano, Syu-ichi Yamagiwa, Takeshi Hamatani
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Publication number: 20030143700Abstract: A method for producing optically active alcohols is provided. Optically active alcohols are useful intermediates in pharmaceutical production. The method of the present invention enables simple and efficient production of optically active alcohols with a high optical purity. According to the production method disclosed, optically active alcohols are produced via asymmetric reduction of 3-quinuclidinone using tropinone reductase-I. For example, the use of tropinone reductase-I derived from plants like Datura stramonium and Hyoscyamus niger allows the production of high optical purity (R)-3-quinuclidinol as shown in Formula (1) below.Type: ApplicationFiled: December 6, 2002Publication date: July 31, 2003Inventors: Hiroaki Yamamoto, Momoko Ueda, Ritsuzui Pan, Takeshi Hamatani
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Patent number: 5888804Abstract: The present invention provide processes for producing an optically active quinuclidinol from a quinuclidinone using an asymmetric reduction by a microorganism and enzyme with commercial advantages in simple and easy manner. In the present invention, permit a microorganism or preparation thereof to act on a quinuclidinone (3-quinuclidinone), and recover or harvest an optically active quinuclidinol produced (3-quinuclidinol). The microorganisms capable of producing an (R)-3-quinuclidinol from a 3-quinuclidinone include the genus Nakazawaea, the genus Candida and the genus Proteus. The microorganisms capable of producing an (S)-3-quinuclidinol from a 3-quinuclidinone include the genus Arthrobacter, the genus Pseudomonas and the genus Rhodosporidium.Type: GrantFiled: March 4, 1998Date of Patent: March 30, 1999Assignee: Daicel Chemical Industries, Ltd.Inventors: Akinobu Matsuyama, Takeshi Hamatani
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Patent number: 5874613Abstract: Tyrosine decarboxylase, or microorganisms of the genuses Enterococcus, Lactobacillus, Providencia, Fusarium, and Gibberella were reacted with a mixture of the enantiomers of threo-3-phenylserine or its halogen substitution products to produce (R)-2-amino-1-phenylethanol or its halogen substitution products. At the same time, one of the enantiomers of threo-3-phenylserine or its halogen substitution products were selectively left, and optically active threo-3-phenylserine or its halogen substitution products were produced. In addition, a novel material of 3-(3-chlorophenyl)serine, which is a substrate of the reaction in the present invention, was produced. (R)-2-amino-1-phenylethanol or its halogen substitution products, and optically active threo-3-phenylserine or its halogen substitution products can economically be produced on an industrial scale.Type: GrantFiled: April 22, 1997Date of Patent: February 23, 1999Assignee: Daicel Chemical Industries, Ltd.Inventors: Teruyuki Nikaido, Naoki Kawada, Takeshi Hamatani, Yoichiro Ueda
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Patent number: 5846792Abstract: Tyrosine decarboxylase, or microorganisms of the genuses Enterococcus, Lactobacillus, Providencia, Fusarium, and Gibberella were reacted with a mixture of the enantiomers of threo-3-phenylserine or its halogen substitution products to produce (R)-2-amino-1-phenylethanol or its halogen substitution products. At the same time, one of the enantiomers of threo-3-phenylserine or its halogen substitution products were selectively left, and optically active threo-3-phenylserine or its halogen substitution products were produced. In addition, a novel material of 3-(3-chlorophenyl)serine, which is a substrate of the reaction in the present invention, was produced. (R)-2-amino-1-phenylethanol or its halogen substitution products, and optically active threo-3-phenylserine or its halogen substitution products can economically be produced on an industrial scale.Type: GrantFiled: April 22, 1997Date of Patent: December 8, 1998Assignee: Daicel Chemical Industries, Ltd.Inventors: Teruyuki Nikaido, Naoki Kawada, Takeshi Hamatani, Yoichiro Ueda
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Patent number: 5731175Abstract: Tyrosine decarboxylase, or microorganisms of the genuses Enterococcus, Lactobacillus, Providencia, Fusarium, and Gibberella were reacted with a mixture of the enantiomers of threo-3-phenylserine or its halogen substitution products to produce (R)-2-amino-1-phenylethanol or its halogen substitution products. At the same time, one of the enantiomers of threo-3-phenylserine or its halogen substitution products were selectively left, and optically active threo-3-phenylserine or its halogen substitution products were produced. In addition, a novel material of 3-(3-chlorophenyl)serine, which is a substrate of the reaction in the present invention, was produced. (R)-2-amino-1-phenylethanol or its halogen substitution products, and optically active threo-3-phenylserine or its halogen substitution products can economically be produced on an industrial scale.Type: GrantFiled: August 29, 1996Date of Patent: March 24, 1998Assignee: Daicel Chemical Industries, Ltd.Inventors: Teruyuki Nikaido, Naoki Kawada, Takeshi Hamatani, Yoichiro Ueda
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Patent number: 5436224Abstract: 1,3-Oxazin-4-one derivatives represented by general formula (I) ##STR1## wherein R.sup.1 is a lower alkyl group, a lower alkenyl group, an aryl group which may be substituted, or an aralkyl group which may be substituted;R.sup.2 is a hydrogen atom or a lower alkyl group;R.sup.3 is a lower alkyl group, an aryl group which may be substituted, or an aralkyl group which may be substituted; andR.sup.4 and R.sup.5, independently, each is a lower alkyl group, or R.sup.4 and R.sup.5, taken together with the carbon atom to which they are bonded, combine to form a 3- to 8-membered carbocyclic group which may have a branch of a lower alkyl group. These compounds have broad herbicidal spectra and potent herbicidal activities and in addition high safety to useful crops, so that they are useful as herbicides.Type: GrantFiled: September 30, 1993Date of Patent: July 25, 1995Assignees: Mitsubishi Petrochemical Co., Ltd., Daicel Chemical Industries, Ltd.Inventors: Takeshi Hamatani, Hirokazu Hasebe, Keiichi Hayashizaki, Yoshihiro Usui, Chiharu Yasumoto, Atsushi Go, Mitsuru Hikido, Kumiko Tamura, Kazuo Jikihara