| abstract |
The present invention relates to a mixture of substances comprising a compound of formula I wherein R 1 is methyl, ethyl, propyl or butyl, R 2 is H, OH, NH 2 or NH (C 1 -C 6 alkyl), R 3 is a sugar moiety, a sugar moiety, a tetracyclic residue, wherein the acyclic residue, the dic sugar residue, the tric sugar residue or the tetrac sugar residue may be optionally substituted with one or more sugar protecting groups, or an amino acid residue, a diamino acid residue, a triamino acid residue or a tetra propyl or butyl, R 5 is methyl, ethyl, propyl or butyl, Z is - (C = O) n (C 0-16 alkyl) -, - (C = O) n (C 0-16 alkyl) NH-, - (C = O) n (C 0-16 alkyl) -O-, - ( C = O) n (C 1 -C 16 alkyl) - (C = O) m or a covalent bond, n being 0 or 1, degree 0 or 1 with further active ingredients. The invention relates to the use and preparation of such mixtures of materials. SHE |