N-HETEROCYCLIC PHOSPHORUS COMPOUNDS

摘要

The compounds have the formula …IMAGE… in which the radicals R1, R2, R3 and R4 denote hydrogen, C1-C4-alkyl, 2-chloroethyl, 2-bromoethyl or 2-C1-C4-alkanesulphonyloxyethyl, R8 is hydrogen, C1-C6-alkyl or an acyl radical, the radicals R6 and R7 are hydrogen or together form an oxygen atom or in which R6 is hydrogen and in this case R7 is a carboxyl group, a C1-C6-alkoxycarbonyl group, an aminocarbonyl group or an alkylaminocarbonyl group, Z is a sulphur atom, an oxygen atom, the group NR5, the group -S-C(R5)2-, -O-C(R5)2- or -NR5-C(R5)2-.