The invention relates to borneol derivatives of general formula I STR1 in which R1 means C(O)--CH(OR6)--CH(NHR7)--R8, R2 means hydrogen, --OH, C1 -C10 alkyl, C1 -C10 alkoxy, --OC(O)R9a, --OSO2 R9a, --OP(O)(OH)2, NHR9a, NR9a R9b, R3 means hydrogen, --OH, C1 -C10 alkoxy, --OC(O)R9b, --OSO2 R9b, --OP(O)(OH)2, or R2, R3 together mean an oxygen atom, R4 means hydrogen, C1 -C10 alkyl, --(CH2)n --OR11a, R5 means hydrogen, C1 -C10 alkyl, --(CH2)p --OR11b, or R4, R5 together mean an oxygen atom, a=CHR10 group, n means 0 to 8, p means 1 to 8, R7 means --C(O)R12, --SO2 R12, --C(O)OR12, --C(O)NHR9d, --C(O)NR9d R9e, STR2 R8 means aryl, R9a-e, R12 are the same or different and mean C1 -C10 alkyl, C4 -C8 cycloalkyl, aryl, C7 -C16 aralkyl, R10 means hydrogen, C1 -C10 alkyl, --(CH2)s --OR14, s means 1 to 8, R6, R11a,b, R14 are the same or different and mean hydrogen, C1 -C10 alkyl, aryl, C7 -C16 aralkyl, --SO2 R9c, --P(O)(OH)2, R13, R15a,b are the same or different and mean hydrogen, C1 -C10 alkyl, aryl, C7 -C16 aralkyl, X1, X2 are the same or different and mean X, X can be hydrogen, halogen, --OH, --NO2, --N3, --CN, --NR15a R15b, --NHSO2 R15a, --CO2 R15, C1 -C10 alkyl, C1 -C10 alkoxy, C1 -C10 acyloxy, C1 -C10 acyl, and, if R15 means hydrogen, their salts with physiologically compatible bases, as well as the α-, β-or γ-cyclodextrin clathrates, as well as the compounds of formula I that are encapsulated with liposomes.