Ethynyl-chroman compounds

Details Ethynyl-chroman compounds Ethynyl-chroman compounds

1990-11-06

1991-10-01

Fan, Jane T.

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

Organic compounds

Heterocyclic carbon compounds containing a hetero ring...

C07D31104

Patent

active

050535234

ABSTRACT:
6-Ethynyl-chroman derivatives wherein R.sub.1, R.sub.2, R.sub.3, R.sub.4, and R.sub.5, hydrogen or lower alkyl groups of one to six carbons wherein R.sub.1, R.sub.2, R.sub.3, R.sub.4, and R.sub.5 may be identical or different from one another, X is oxygen, and Z is hydrogen of the following formula: ##STR1##

REFERENCES:
patent: 4810804 (1989-03-01), Chandraratna
patent: 4900476 (1990-02-01), Chan et al.
patent: 4980369 (1990-12-01), Chandraratna

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