Patent ID: 6972111

Claim:
A compound selected from the group consisting of compounds having the formulae 11, 12, 13, 15, 16, 17, 18, 19, 110, 111, 112, and 113: wherein R 1 represents NR 2 R 3 wherein R 2 represents a hydrogen atom or a C1–C8-alkyl and R 3 represents C═OR 4 wherein R 4 represents a hydrogen atom or one of the groups OR 5 or NHR 5 wherein R 5 designates a C1–C8-alkyl or aryl, each optionally substituted by halogen; or R 1 represents N═CR 6 R 7 wherein R 6 represents a hydrogen atom or a C1–C6-alkyl or aryl, and R 7 represents a C1–C6-alkyl or aryl, each optionally substituted by halogen; or R 1 represents an isonitrile, isocyanate, isothiocyanate or guanidino group; and n represents 0 or 1 and wherein when R 1 is isothiocyanate, n is 0.