Optically active chroman derivatives and intermediates thereof,

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

1991-11-08

1993-08-03

Chan, Nicky

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

Organic compounds

Heterocyclic carbon compounds containing a hetero ring...

549360, 549417, C07D31158

Patent

active

052330567

ABSTRACT:
An optically active (S)- or (R)-chroman-2-ethanol compound of a general formula (I) ##STR1## wherein R.sub.1, R.sub.2 and R.sub.3 independently represent a hydrogen atom or a lower alkyl group having 1 to 4 carbon atoms, and a chiral central carbon atom marked with a symbol * in the formula (I) alternatively has one of an R-configuration and an S-configuration, is disclosed. Further, intermediate products of the compound of the formula (I) are also disclosed. Still further, a process for manufacturing the above compounds is disclosed. The compound of the formula (I) is easily synthesized from an easily available optically active starting material.

REFERENCES:
patent: 4424389 (1984-01-01), Sakito
patent: 4645845 (1987-02-01), Gehrken et al.

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