UN PROCEDIMIENTO PARA LA PREPARACION DE NUEVOS DERIVADOS DE LOS COMPUESTOS C-076.

摘要

Derivatives of C-076 compounds of formulae 1,2 and 3, isolated from the fermentation broth of S.avermilitis ATCC 31267, 31271 and 31272, that produced the original C-076 compounds, retaining the biological activity of the parent compounds, e.g. as antiparasitic agents, …… wherein R1 is -OH and R2 is sec-butyl; )b) R1 is = O and R2 is sec-butyl. …… wherein R3 is hydrogen or hydroxyl; ……