Patent ID: 7977499

Claim:
A compounds of the formula I in the form of racemates, an enantiomerically pure diastereomer or a mixture of diastereomers, where the radicals R 1 are identical or different and are each C 1 -C 4 -alkyl; m is 0 or an integer from 1 to 4; n is 0 or an integer from 1 to 3; p is 0 or an integer from 1 to 5; R 2 is an aromatic hydrocarbon radical or a C-bonded aromatic heterohydrocarbon radical and R 3 is an aliphatic or C-bonded heteroaliphatic hydrocarbon radical; or R 2 and R 3 are identical or different and are each an aliphatic or C-bonded heteroaliphatic hydrocarbon radical; R 4 is an unsubstituted or C 1 -C 6 -alkyl-, C 1 -C 6 -alkoxy- or halogen-substituted hydrocarbon radical; and A is a secondary amino group.