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    • 1. 发明授权
    • A-21978C cyclic peptides
    • A-21978C环肽
    • US4524135A
    • 1985-06-18
    • US637666
    • 1984-08-03
    • Bernard J. AbbottManuel DebonoDavid S. Fukuda
    • Bernard J. AbbottManuel DebonoDavid S. Fukuda
    • A61K38/00C07K7/08C12P21/06C12P21/04C12R1/045
    • C12R1/045C07K7/08C12R1/62A61K38/00Y02P20/55Y10S435/827
    • A-21978C cyclic peptides of the formula ##STR1## wherein R is selected from the group consisting of hydrogen, an amino-protecting group , 8-methyldecanoyl, 10-methylundecanoyl, 10-methyldodecanoyl, the specific C.sub.10 -alkanoyl group of A-21978C factor C.sub.0 and the specific C.sub.12 -alkanoyl groups of A-21978C factors C.sub.4 and C.sub.5 ; R.sup.1 and R.sup.2 are, independently, hydrogen or an amino-protecting group, and salts thereof, are prepared by enzymatic deacylation of an antibiotic selected from A-21978C complex, A-21978C factors C.sub.0, C.sub.1, C.sub.2, C.sub.3, C.sub.4 and C.sub.5 and blocked A-21978C complex and factors C.sub.0, C.sub.1, C.sub.2, C.sub.3, C.sub.4 and C.sub.5, using an enzyme produced by the Actinoplanaceae, preferably by Actinoplanes utahensis. The A-21978C cyclic peptides and salts thereof are useful intermediates to prepare new semi-synthetic antibacterial agents.
    • A-21978C式:其中R选自氢,氨基保护基,8-甲基癸酰基,10-甲基十一烷酰基,10-甲基十二烷酰基,特定的C 10 - 烷酰基 A-21978C因子C0和A-21978C因子C4和C5的特定C12-烷酰基; R1和R2独立地是氢或氨基保护基团及其盐,其通过选自A-21978C复合物,A-21978C因子C0,C1,C2,C3,C4和C5的抗生素的酶脱酰化和 使用由Actinoplanaceae生产的酶,优选通过Actinoplanes utahensis阻断A-21978C复合物和因子C0,C1,C2,C3,C4和C5。 A-21978C环肽及其盐是制备新型半合成抗菌剂的有用中间体。
    • 10. 发明授权
    • Derivatives of A-21978C cyclic peptides
    • A-21978C环肽的衍生物
    • US4537717A
    • 1985-08-27
    • US652695
    • 1984-09-21
    • Bernard J. AbbottManuel DebonoDavid S. Fukuda
    • Bernard J. AbbottManuel DebonoDavid S. Fukuda
    • A61K38/00C07K7/08C07C103/52
    • C12R1/045C07K7/08C12R1/62A61K38/00Y02P20/55Y10S930/27
    • A-21978C cyclic peptide derivatives of the formula ##STR1## in which R, R.sup.1 and R.sup.2 are, independently, hydrogen, C.sub.4 -C.sub.14 -alkyl, optionally substituted C.sub.2 -C.sub.19 -alkanoyl, C.sub.5 -C.sub.19 -alkenoyl or an amino-protecting group; R.sup.3, R.sup.4 and R.sup.5 are hydrogen or (i) R.sup.3 and R.sup.1 and/or (ii) R.sup.4 and R and/or (iii) R.sup.5 and R.sup.2, taken together, may represent a C.sub.4 -C.sub.14 alkylidene group; provided that (1) at least one of R, R.sup.1 or R.sup.2 must be other than hydrogen or an amino-protecting group, (2) at least one of R.sup.1 or R.sup.2 must be hydrogen or an amino-protecting group, (3) the R, R.sup.1 and R.sup.2 groups must together contain at least four carbon atoms, and (4) when R.sup.1 and R.sup.2 are both selected from hydrogen or an amino-protecting group, R cannot be 8-methyldecanoyl, 10-methyldodecanoyl, 10-methylundecanoyl, the mixed C.sub.10 -alkanoyl group of A-21978C.sub.0 or the specific C.sub.12 -alkanoyl groups of A-21978C factors C.sub.4 and C.sub.5 ; and the salts thereof.
    • 其中R 1,R 2和R 2独立地是氢,C 1 -C 14 - 烷基,任选取代的C 2 -C 19 - 烷酰基,C 5 -C 19的烷基,A-21978C环肽衍生物 - 烯酰基或氨基保护基; R 3,R 4和R 5是氢或(i)R 3和R 1和/或(ii)R 4和R 3和/或(iii)R 5和R 2一起可以表示C 4 -C 14亚烷基; 条件是(1)R,R 1或R 2中的至少一个必须不是氢或氨基保护基,(2)R 1或R 2中的至少一个必须是氢或氨基保护基,(3) R,R 1和R 2基团必须一起含有至少4个碳原子,和(4)当R 1和R 2均选自氢或氨基保护基时,R不能是8-甲基癸酰基,10-甲基十二烷酰基,10-甲基十一烷酰基, A-21978C0的混合C10-烷酰基或A-21978C因子C4和C5的特定C12-烷酰基; 及其盐。