GEL FORMING COMPOUNDS

摘要

Compounds of general formula (Ia) or (Ib): general formula (Ia) or (Ib): wherein: R¹ is C_1-6 alkyl, benzyl, phenyl, or indolylmethyl, any of which may be substituted with OH, 0(C_1-6 alkyl) or S(C_1-6 alkyl); each of X and X^a is independently -O-[CH₂]_P- or -NH-[CH₂]_r; p is 1 to 4 except when: R¹ is C_1-6= alkyl, and: n is = 6 in compounds of formula (Ia); or q is = 5 in compounds of formula (Ib); in which case, p is 2 to 4; r is 0 to 4; each of R² and R²