US4882451A
Expired / Lapsed
US
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Optically active compounds and process for producing thereof
Assignee: JNC Corp
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Filing: 1988-05-02
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Granted: 1989-11-21
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Expires: 2008-05-02
Abstract
Abstract The present invention provides optically active compounds and a process for producing the optically active compounds by a biochemical method in which specific compounds having hydroxyl or acyloxy groups are reacted with esters in the presence of hydrolase. The compounds have the following general formula: ##STR1## wherein R 1 , R 2 and R 3 are selected from alkyl groups having 1-4 carbon atoms and phenyl groups, X is selected from a hydrogen atom and ##STR2## R is selected from alkyl groups having 1-20 carbon atoms, and C* indicates an asymmetric carbon atom.
Inventors
- 👤 Naoyuki Yoshida
- 👤 Masakazu Kaneoya
- 👤 Manabu Uchida
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 11:44
CPC Classifications
C; C12; C12P; C12P9/00; C07; C07F; C07F7/00; C07F7/02; C07F7/08; C07F7/0803; C07F7/081; C07F7/0812; C12P41/00; C12P41/003; C12P41/004
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
58 words
An optically active R- or S-compound represented by the general formula: wherein R 1 , R 2 and R 3 are selected from alkyl groups having 1-4 carbon atoms and phenyl groups, X is selected from a hydrogen atom and ##STR11## is selected from alkyl groups having 1-20 carbon atoms, and C * indicates an asymmetric carbon atom.
Claim 2
Dependent Claim
58 words
An optically active R- or S-compound represented by the general formula: wherein R 1 , R 2 and R 3 are selected from alkyl groups having 1-4 carbon atoms and phenyl groups, X is selected from a hydrogen atom and ##STR11## is selected from alkyl groups having 1-20 carbon atoms, and C * indicates an asymmetric carbon atom.
Claim 3
Dependent Claim
19 words
A compound as claimed in claim 1, wherein the compound represented by the formula (I) is optically active 1-trimethylsilyl-1-butyne-3-ol.
Claim 4
Dependent Claim
20 words
A compound as claimed in claim 1, wherein the compound represented by the formula (I) is optically active 1-trimethylsilyl-1-butyne-3-yl propionate.
Claim 5
Dependent Claim
20 words
A compound as claimed in claim 1, wherein the compound represented by the formula (I) is optically active 1-trimethylsilyl-1-butyne-3-yl butyrate.
References Cited (Backward Citations)
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SU145549A1
Cited
US4189431A
Cited
US4190597A
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US4324729A
Cited
JPS61263987A
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JPS62175490A
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1992-11-20 | 1993-05-22 | 1993-11-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1996-11-20 | 1997-05-22 | 1997-11-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2000-11-20 | 2001-05-22 | 2001-11-21 | $7700.00 | Window Closed / Lapsed |