derivatives of substance sf - 1739, benemnd sf - 1739 hp (c), framstelld by cultivation of streptomyces strain griseoplanus sf - 1739 (atcc 31451) and composition - substance

摘要

: Substance SF-1739 derivatives, Substance SF-1739 HP, Substance SF-1739 HP-C, Substance SF-1739 HP-F, Substance SF-1739 HP-3 and Substance SF-1739 HP-5, the physico-chemical proper-ties of which derivatives are described in the specification; processes for preparing such SF-1739 derivatives; and antimicrobial and antitumor compositions containing at least one of the said Substance SF-1739 derivatives.