Intermediates to optically active cis-1,3-dibenzyl-hexahydro-1H-

Details Intermediates to optically active cis-1,3-dibenzyl-hexahydro-1H- Intermediates to optically active cis-1,3-dibenzyl-hexahydro-1H-

1983-01-25

1985-01-29

Schwartz, Richard A.

Organic compounds -- part of the class 532-570 series

Organic compounds

Heterocyclic carbon compounds containing a hetero ring...

548303, C07D23334

Patent

active

044967390

ABSTRACT:
A process for preparing an optically active cis-1,3-dibenzylhexahydro-1H-furo[3,4-d]imidazole-2,4-dione of the formula: ##STR1## wherein an asterisk (*) indicates an asymmetric carbon, Bzl represents a benzyl group and the 3a- and 6a-positions take the cis-configuration, which comprises reducing selectively an optically active cis-imidazolidinedicarboxylic acid monoester of the formula: ##STR2## wherein R is a C.sub.1 -C.sub.6 alkyl group and Bzl is as defined above with a reducing agent at either one of the carboxyl group and the alkoxycarbonyl group in the said monoester, followed by cyclization, the said monoester being the one obtainable by hydrolysis of a cis-imidazolidinedicarboxylic acid diester of the formula: ##STR3## wherein R and Bzl are each as defined above with an enzymatic material having a capability of hydrolyzing the ester group in the said diester.

REFERENCES:
Chemical Abstracts, 98:13857h, (1983), [Iriuchijima et al., Agric. Biol. Chem., 1982, 46(7), 1907-10].
Chemical Abstracts, 98:124198p, (1983), [Jpn. Kokai Tokkyo Koho JP No. 57, 198, 098, 12/4/82].
Summary of the speeches at the annual meeting of the Association of Agricultural Chemistry of Japan, Tokyo, 4/1982.

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