| 摘要 |
2-Amino-2-deoxy- beta -D-glucopyranosyl-(1-4)-2-amino-2-deoxy-D-glucoses of the general structural formula: <IMAGE> wherein R1 is hydrogen, alkyl (1-7C), substituted alkyl (1-7C), phenyl, substituted phenyl, benzyl, or substituted benzyl; R2 is alkyl, substituted alky, phenyl, or substituted phenyl and each R2 may be the same group or a different group; R3 is H or <IMAGE> wherein R8 is H or lower alkyl (1-10C), and provided at least one of R3 is not H, R9 is H, or R9-R10 together is -CH2-CH2-CH2-; R10 is H, alkyl (L-7C), hydroxymethyl, mercaptomethyl, benzyl, or substituted benzyl; R11 and R12 each is carboxyl, esterified carboxyl (1-7C), amidated carboxyl, or mono- or di-alkyl- (1-3C) amidated carboxyl; R4 and R5 are the same or different and are H, aliphatic or aromatic acyl (2-21C) or substituted acyl (2-21C); when R8 is lower alkyl, the stereochemistry at asymmetric center I can be either D or L; when R10 is not H, the stereochemistry at asymmetric center II is L; the stereochemistry at asymmetric center III is D. These compounds possess immunostimulatory properties. |
