Organic compounds -- part of the class 532-570 series – Organic compounds – Nitrogen attached directly or indirectly to the purine ring...
Patent
1990-09-06
1992-04-21
Shah, Mukund J.
Organic compounds -- part of the class 532-570 series
Organic compounds
Nitrogen attached directly or indirectly to the purine ring...
C01D48704
Patent
active
051069741
ABSTRACT:
A compound of the formula ##STR1## wherein the ring A is a pyrrole or pyrroline ring, X is an amino group or a hydroxyl group, Y is a hydrogen atom, an amino group or a hydroxyl group, R is a hydrogen atom, a fluorine atom, an alkyl group, an alkenyl group or an alkynyl group, --COOR.sup.1 and --COOR.sup.2 are independently carboxyl groups which may be esterified and n is an integer of 2 to 4, and R may be different in each of the n repeating units, and salts thereof have excellent antitumor effects, and can be used as antitumor agents in mammals.
REFERENCES:
patent: 4532241 (1985-07-01), DeGraw et al.
patent: 4684653 (1987-08-01), Taylor et al.
patent: 4997838 (1991-03-01), Akimoto et al.
Akimoto Hiroshi
Hitaka Takenori
Miwa Tetsuo
Shah Mukund J.
Takeda Chemical Industries Ltd.
Venkat Jyothsna
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