Cyclic compounds

Details Cyclic compounds Cyclic compounds

1980-08-06

1981-11-24

Douglas, Winston A.

Chemistry of carbon compounds

Miscellaneous organic carbon compounds

C-metal

260366, 260383, 260462C, 260691, C07C 5016, C07C10702

Patent

active

043023983

ABSTRACT:
The present invention relates to naphthacene derivatives. More particularly, the invention is concerned with a process for the manufacture of hexahydronaphthacene derivatives and with certain of said derivatives per se. The invention is also concerned with novel intermediates occurring in said process and with the preparation thereof.
There are presented hexahydronaphthacene derivatives of the formula ##STR1## wherein R.sup.1 represents a lower alkyl or esterified carboxy group or a group of the formula ##STR2## , in which R.sup.2 and R.sup.3 together form an oxo group or a protected oxo group and X represents a hydrogen atom or a hydroxy or acyloxy group, or

REFERENCES:
patent: 3287270 (1966-11-01), McCabe et al.
patent: 4077988 (1978-03-01), Arcamone et al.
patent: 4107423 (1978-08-01), Arcamone et al.
patent: 4132721 (1979-01-01), Bernardi et al.

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