Patent ID: 9137992
Filing Date: 2015-09-22
Classification: A01N,C07H,C12N,C12P

Abstract:
1. A compound of the formula (I) wherein R1 is hydrogen, methyl, or ethyl; R2 is hydrogen, methyl, or ethyl; R3 is hydrogen, R4 is methyl or ethyl, either of which may be substituted with one or more groups selected from halo, hydroxy, C R4 is an alpha-branched C R4 is a 3-6 membered heterocyclic group that contains O or S, that is saturated or fully or partially unsaturated, and that may be substituted with one or more groups selected from halo, hydroxy, C R5 is hydrogen or methyl; R6 is hydrogen or methyl; R7 is hydrogen or methyl; R8 is hydrogen, methyl, or ethyl; and R9 is hydrogen, methyl, or ethyl, and/or a 5,6-dihydro derivative of the compound of formula (I), provided that the compound of formula (I) has at least one of the following features: a) R4 is n-propyl, iso-propyl, cyclopropyl, methylcyclopropyl, sec-butyl, cyclobutyl, methylthio, or furyl, or b) R1 or R2 is ethyl.