| abstract |
A compound of the formula (I), wherein the bond between carbon atoms 22 and 23 indicated with a broken line is a single or double bond, m is 0 or 1, R1 represents a C1-C12alkyl, C3-C8cycloalkyl or C2-C12alkenyl group, R2 represents a hydrocarbyl group or a substituted hydrocarbyl group, and R3 and R4 represent, independently of each other, hydrogen or a chemical constituent, or either R2 and R3 together or R3 and R4 together represent a three- to seven-membered alkylene or a four- to seven-membered alkenylene bridge, for each of which at least one, preferably a CH2 group may be replaced by O, S or NR6, where R6 represents hydrogen or a hydrocarbyl group or a substituted hydrocarbyl group; or, if appropriate, an E/Z isomer and/or tautomer of the compound of formula (I), in each case in free form or in salt form. |