The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Sep. 07, 1993
Filed:
Apr. 30, 1992
Seiichi Takano, Sendai, JP;
Kunio Ogasawara, Sendai, JP;
Asahi Denka Kogyo K.K., Tokyo, JP;
Abstract
An optically active pentane compound of the general formula (I): ##STR1## wherein R.sub.1 represents a lower alkyl group having 1 to 4 carbon atoms, R.sub.2 represents a lower alkoxycarbonyl group having an alkoxy moiety of 1 to 4 carbon atoms, or a straight-chain or branched alkyl group having 1 to 7 carbon atoms which is unsubstituted or substituted with a hydroxy or protected hydroxy group, A represents a halogen atom, hydroxy, protected hydroxy, or ethynyl group, or a group of the formula ##STR2## B represents a hydrogen atom, hydroxy, protected hydroxy or acyloxy group, D represents a hydrogen atom, or A and B together can form an acetal or epoxy group, A and D together can form an ethylidene group, and B and D together can form a carbon-carbon direct bond, and the chiral central carbon atoms marked with symbols *, # and .thrfore. in said formula (I) alternatively have one of an R-configuration and an S-configuration Further, intermediates thereof, and a process for manufacturing the above compound are also disclosed