Novel penicillin derivatives containing a coumarin nucleus and m

Details Novel penicillin derivatives containing a coumarin nucleus and m Novel penicillin derivatives containing a coumarin nucleus and m

1978-03-08

1981-12-01

Trousof, Natalie

Drug, bio-affecting and body treating compositions

Antigen, epitope, or other immunospecific immunoeffector

Parasitic organism or component thereof or substance...

2602391, A61K 3143, C07D49968

Patent

active

043036643

ABSTRACT:
This invention provides novel penicillin derivatives of formula [I]; ##STR1## wherein A is hydrogen or hydroxyl, and B represents the cumarin nucleus of formula [III-a]; ##STR2## in which B.sub.1, B.sub.2, B.sub.3, B.sub.4 and B.sub.5 are same or different, and are hydrogen or substituent groups that may contain nitrogen, sulfur or oxygen atom,
or nontoxic salts thereof, and bactericides containing said novel penicillin derivatives or nontoxic salts thereof as the main ingredient, and also an advantageous process for producing said novel penicillin derivatives or nontoxic salts thereof, which comprises reacting a derivative of .alpha.-aminobenzylpenicillin with a coumarincarboxylic acid or reacting 6-aminopencillanic acid, a carboxylic acid salt thereof or a protected derivative thereof having the carboxyl blocked with a readily removable protecting group, with a coumarincarboxylic acid phenylglycinamide.

REFERENCES:
patent: 3433784 (1969-03-01), Long et al.
patent: 3939150 (1976-02-01), Murakami et al.
patent: 3951952 (1976-04-01), Hamanaka et al.
patent: 3954734 (1976-05-01), Doub et al.
patent: 4005075 (1977-01-01), Yamada et al.

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