Optically active pentane derivatives and intermediates thereof,

Details Optically active pentane derivatives and intermediates thereof, Optically active pentane derivatives and intermediates thereof,

1991-06-13

1992-08-04

Evans, J. E.

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

Organic compounds

Heterocyclic carbon compounds containing a hetero ring...

549430, 549561, 556 12, 556 88, 560111, 560112, 560117, 560185, 500186, 563840, 563852, 563873, 5639095, C07C 31125, C07C 33025, C07C 3303, C07C 33042

Patent

active

051360616

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 a 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.

REFERENCES:
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patent: 3442930 (1969-05-01), McConnell et al.
patent: 3584010 (1971-06-01), Marbet
patent: 3880911 (1975-04-01), Saucy
patent: 4045475 (1977-08-01), Chan et al.
patent: 4380675 (1983-04-01), Gebauer et al.
patent: 4855481 (1989-08-01), Guindon et al.

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