Synthesis for the preparation of tetracyclic compounds

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

1975-02-06

1977-05-24

Daus, Donald G.

Chemistry of carbon compounds

Miscellaneous organic carbon compounds

C-metal

260268PC, 424250, 424251, C07D23970, C07D24138

Patent

active

040255131

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.
P. A. Petyunin Chemical Abstracts, vol. 47, 5385 a-h (1953).
Proctor et al., J. Chem. Soc., 2302-2311, (1957).

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