Synthesis for the preparation of tetracyclic compounds

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

1976-12-27

1980-08-12

Berch, Mark L.

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

Organic compounds

Four or more ring nitrogens in the bicyclo ring system

544229, 544335, 544398, 544401, 544343, 260570R, 260570, 260512, 568705, C07D23974, C07D24138

Patent

active

042174520

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 Burg et al.
patent: 3808208 (1974-04-01), Gulbenk et al.
patent: 3892695 (1975-07-01), Van der Burg
Petyunin, "Chemical Abstracts", vol. 47, 1953, col. 5385a.
Proctor, et al., "J. Chem. Soc.", 1957, pp. 2302-2311.

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