13-(SUBSTITUTED THIO) ACETOXYMILBEMYCIN DERIVATIVES, THEIR PREPARATION AND THEIR AGROCHEMICAL USES

摘要

Compounds having the formula (I):wherein: R1 is methyl, ethyl or isopropyl; R2 isalkyl, aralkyl, cycloalkyl, cycloalkylmethyl, aryl,heterocyclic, or heterocyclic-substituted thio; R3 ishydrogen, methyl or ethyl; or R2 together with R3 is-(CH2)n-, wherein n is 3,4 or 5; and A is aromaticheterocyclic; and salts thereof, are valuableagricultural and horticultural anthelmintic, acaricidaland insecticidal agents.