Synthesis for the preparation of tetracyclic compounds

Details Synthesis for the preparation of tetracyclic compounds Synthesis for the preparation of tetracyclic compounds

1979-08-08

1981-03-03

Berch, Mark L.

Chemistry of carbon compounds

Miscellaneous organic carbon compounds

C-metal

C07D48704

Patent

active

042540313

ABSTRACT:
The invention relates to a new synthesis for the preparation of tetracyclic compounds of the general formula ##STR1## as well as the pharmaceutically acceptable salts thereof, in which: n is the number 1 or 2,

REFERENCES:
patent: 3190893 (1965-06-01), Holm
patent: 3284454 (1966-11-01), Haring et al.
patent: 3534041 (1970-10-01), Van der Berg
patent: 3808208 (1974-04-01), Gulbenil et al.
patent: 3892695 (1975-01-01), Van der Berg
Petyanin, Chem. Abs. 47, 5385a (1953).
Proctor et al., J. Chem. Soc. 2302-2311 (1957).

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