Drug – bio-affecting and body treating compositions – Designated organic active ingredient containing – Peptide containing doai
Patent
1988-11-17
1991-08-20
Lee, Lester L.
Drug, bio-affecting and body treating compositions
Designated organic active ingredient containing
Peptide containing doai
514 19, 530330, 530331, A61K 3702, C07K 508, C07K 510
Patent
active
050414232
ABSTRACT:
New antibiotics of the mureidomycin group have the formula ##STR1##
wherein X represents the group ##STR2##
and wherein R represents hydrogen, an alkyl group having from 1 to 10 carbon atoms, an alkenyl group having from 2 to 7 carbon atoms, an alkynyl group having from 3 to 7 carbon atoms, an aryl group having from 6 to 10 carbon atoms, an aralkyl group having from 7 to 10 carbon atoms, or one of the said aryl or aralkyl groups substituted with at least one substituent selected from halogen and alkyl groups having from 1 to 5 carbon atoms. The compound in which X represents 8-hydroxy-1,2,3,4-tetrahydroisoquinolin-3-yl is named mureidomycin E and the compound in which X represents 6-hydroxy-1,2,3,4-tetrahydroisoquinolin-3-yl is named mureidomycin F. This group of compounds and their pharmaceutically acceptable esters and salts are useful as antibiotics for the treatment of bacterial infections. Mureidomycins E and F can be obtained by fermentation of a suitable Streptomyces strain, in particular Streptomyces flaviodovirens SANK 60486 (BIKOKEN JOHKI 1347; FERM BP-1347). Alternatively, all of the compounds can be obtained synthetically by reacting the previously known compound mureidomycin A with an aldehyde of the formula
REFERENCES:
patent: 4670542 (1987-06-01), Benz et al.
patent: 4722924 (1988-02-01), Baldwin
patent: 4748155 (1988-05-01), Sisto et al.
Haneishi Tatsuo
Inukai Masatoshi
Isono Fujio
Kinoshita Takeshi
Sakaida Yoshiharu
Lee Lester L.
Sankyo Company Limited
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