Process for the preparation of purine derivatives as antiviral a

Details Process for the preparation of purine derivatives as antiviral a Process for the preparation of purine derivatives as antiviral a

1990-09-26

1993-06-15

Shah, Mukund

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

Organic compounds

Four or more ring nitrogens in the bicyclo ring system

544276, 544277, 560219, C07F 96524, C07D47318, C07D47332

Patent

active

052200248

ABSTRACT:
A process for the preparation of a compound of formula (A): ##STR1## wherein X is hydrogen, hydroxy, chloro, C.sub.1-6 alkoxy or phenyl C.sub.1-6 alkoxy and R.sub.a and R.sub.b are hydrogen, including acyl and phosphate derivatives thereof; which process comprises:

REFERENCES:
patent: 4798833 (1989-01-01), Johansson et al.
patent: 4910307 (1990-03-01), Wyatt
patent: 4942166 (1990-07-01), Harnden et al.
patent: 4988703 (1991-01-01), Norbeck et al.
patent: 5017701 (1991-05-01), Grinter et al.

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