Ciba-geigy Corporation

Gesellschaft Fur Biotechnologische Forschung Mbh

Gesellschaft Fur Biotechnologische Forschung Mbh, Braunschweig

Dietmar Schummer

Marius Sutter

Norbert Bedorf

Gerhard Hofle

Bettina Bohlendorf

Derived macrocyclic compounds of the formula I ##STR1## where R is hydrogen, methyl or certain acyl groups, the dotted line in the 9,10-position is a saturated bond or, in the event that R is methyl, is also a double bond, and X is a keto group, or a substituted or unsubstituted oxime, hydrazone or semicarbazone, represent effective microbicides for controlling plant diseases. They can be employed in the customary formulation as agrochemical agents.

Process for preparing soraphen compounds

Novel macrocyclic compounds of the formual I ##STR1## where the dotted line in the 9,10-position is a saturated bond or a double bond, alternatively, and R is hydrogen, methyl or certain acyl radicals, and R.sub.o is hydrogen, halogen, azido, thiol, hydroxyl or --OY, where Y is, among other radicals, an ether radical, a silyl group, a sulfonyl group, a sugar radical or a (thiol)acyl radical, and R being methyl if there is a double bond in the 9,10-position, have microbicidal properties for the control of phytopathogenic microorganisms. They can be employed in the customary formulation for the control of plant disease.

Microbicides

Soraphen compounds and their use as microbicides

Growing community of inventors

Braunschweig, Germany

Dietmar Schummer