Oxo C-ring benzopyrans

Details Oxo C-ring benzopyrans Oxo C-ring benzopyrans

1976-01-07

1977-09-27

Helfin, Bernard

Chemistry of carbon compounds

Miscellaneous organic carbon compounds

C-metal

424283, C07D30783, C07D31180

Patent

active

040511529

ABSTRACT:
Benzopyrans of the formula ##STR1## wherein n represents 0 or 1, R is an alkyl group having 1 to 20 carbon atoms, an aryl-lower alkyl group or a cycloalkyl-lower alkyl group, R.sub.1 is hydrogen or ##STR2## wherein R.sub.4 is lower alkyl, phenyl, cycloalkyl-lower alkyl or aryl-lower alkyl, R.sub.2 is a lower alkyl and R.sub.3 is hydrogen or one or two lower alkyl groups, pharmaceutical compositions containing the compounds, and uses of the compounds as tranquilizers and analgesics.

REFERENCES:
patent: 3901926 (1975-08-01), Winn et al.
patent: 3928598 (1975-12-01), Archer
patent: 3941782 (1976-03-01), Harris et al.
Fiechtl et al., Tetrahedron, 31, 479 (1975).

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