Immunologically active compounds of the formula:
wherein
R1 is CI-7 alkyl, substituted C1-7 alkyl; phenyl; or substituted phenyl;
R2 is hydrogen; or C1-10 alkyl;
R3 and R4 may be the same or different and are each independently acyl of the formula:
where X is -O-, -S-, or
R9, R10 and R12 may be the same or different and are each independently hydrogen; C1-20 alkyl; C1-20 alkylcarbonyloxy; amino; benzyl; C1-20 alkoxymethyl; or C1-20 alkylamido;
r is 0 or 1; s is 0 or 1; and t is 0-20, provided that s may only be 0 when r and t are greater than 0, or when r is 0 and R11 is amino, phenyl, substituted phenyl, 1-adamantyl, or heterocycle selected from the group consisting of 2- or 3-furyl, 2- or 3-thienyl, 2- or 3-pyrrolidinyl, 2-, 3-, or 4-pyridyl, and 1-tetrazolyl, said heterocycle optionally substituted with C1-20 alkylcarbonyl; and
R11 is hydrogen; C1-30 alkyl; C2-30 alkenyl; C1-30 alk- oyx; phenyl; C1-20 alkylsulfonyl; or cholesteryl; and
R4 may additionally be hydrogen;
Rs is hydrogen; or R5-R6 together is -CH2-CH2-CH2;
R6 is hydrogen; CI-7 alkyl; hydroxymethyl; mercaptomethyl; benzyl; or substituted benzyl;
R7 and R8 may be the same or different and are each independently COOR or CONR'R", where R is hydrogen or C1-7 alkyl, and R' and R" are each independently hydrogen or C1-3 alkyl; when R2 is C1-10 alkyl, the stereochemistry at asymmetric center I can be either D or L; when R6 is not hydrogen, the stereochemistry at asymmetric center II is L; the stereochemistry at asymmetric center III is D.
式中的免疫活性化合物:
式中
R1 是 CI-7 烷基、取代的 C1-7 烷基;苯基;或取代的苯基;
R2 是氢;或 C1-10 烷基;
R3 和 R4 可以相同或不同,各自独立为式中的酰基:
其中 X 是 -O-、-S- 或
R9、R10 和 R12 可以相同或不同,各自独立地为氢;C1-20 烷基;C1-20 烷基羰氧基;
氨基;苄基;C1-20 烷氧基甲基;或 C1-20 烷基
氨基;
r 为 0 或 1;s 为 0 或 1;t 为 0-20,但只有当 r 和 t 大于 0 时,或当 r 为 0 且 R11 为
氨基、苯基、取代苯基、1-
金刚烷基或选自 2-或 3-
呋喃基、2-或 3-
噻吩基、2-或 3-
吡咯烷基、2-、3-或 4-
吡啶基和 1-
四唑基组成的杂环时,s 才可能为 0,所述杂环可选择被 C1-20 烷基羰基取代;以及
R11 是氢;C1-30 烷基;C2-30 烯基;C1-30 炔基;苯基;C1-20 烷基磺酰基;或
胆固醇基;以及
R4 还可以是氢;
Rs 是氢;或 R5-R6 合在一起是-
CH2- - ;
R6 是氢;CI-7 烷基;羟甲基;巯甲基;苄基;或取代的苄基;
R7和R8可以相同或不同,且各自独立地为COOR或CONR'R",其中R为氢或C1-7烷基,R'和R "各自独立地为氢或C1-3烷基;当R2为C1-10烷基时,不对称中心I的立体
化学结构可以为D或L;当R6不是氢时,不对称中心II的立体
化学结构为L;不对称中心III的立体
化学结构为D。