Polyhydroxylated Phenylacrylic Acid Derivatives as New Anti-tumor Agents
作者:Sajjat Hussoin、George B. FitzGerald、Michael M. Wick
DOI:10.1002/jps.2600800503
日期:1991.5
Preliminary evidence indicates that antitumor agents containing the o-dihydroxybenzene moiety exhibit enhanced antitumor activity toward malignant cells of high oxidative potential, such as melanoma cells. Based on this consideration, 11 hydroxybenzene acrylic acidderivatives of differing redox potential were prepared as potential substrates for the melanoma specific enzyme tyrosinase, that might
初步证据表明,含有邻二羟基苯部分的抗肿瘤药对黑色素瘤细胞等具有高氧化潜能的恶性细胞表现出增强的抗肿瘤活性。基于此考虑,制备了具有不同氧化还原电势的11种羟苯丙烯酸衍生物作为黑素瘤特异性酶酪氨酸酶的潜在底物,其可能表现出一般的抗肿瘤活性并增强了对黑素瘤细胞的细胞毒性。这些化合物中的五个[α-氰基-β-(4-羟基苯基)-,α-氰基-β-(3,4-二羟基苯基)-和α-氰基-β-(3,4,5-三羟基苯基)丙烯酸发现酪氨酸酶(THPPA)和3,4-二羟基-和3,4,5-三羟基苯并氰基乙酰胺]是酪氨酸酶的底物,Km值为0.08至4.13 mM,Vmax值为0.18至3.02。这些数据表明,随着羟基数目的增加,氧化速率增加,并且氰酰胺比相应的氰酸的反应更快,其中二氰化物的反应性最低。相反,氰酰胺作为底物的效果不如氰酸。体外研究表明,除两种化合物外,所有化合物均对L1210(IC50范围为21-980 m
Bicyclic compounds as ring-constrained inhibitors of protein-tyrosine kinase p56lck
作者:Terrence R. Burke、Benjamin Lim、Victor E. Marquez、Zhen Hong Li、Joseph B. Bolen、Irena Stefanova、Ivan D. Horak
DOI:10.1021/jm00056a001
日期:1993.2
A study was undertaken to prepare inhibitors of the lymphocyte protein-tyrosine kinase p56lck. Using the known p56lck inhibitor 3,4-dihydroxy-alpha-cyanocinnamamide (4) as a lead compound, bicyclic analogues were designed as conformationally constrained mimetics in which the phenyl ring and vinyl side chain of the cinnamamide are locked into a coplanar orientation. Such planarity was rationalized to be an important determinant for binding within a putative flat, cleftlike catalytic cavity. Bicyclic analogues were prepared using the naphthalene, quinoline, isoquinoline, and 2-iminochromene ring systems and examined for their ability to inhibit autophosphorylation of immunopurified p56lck. The most potent analogues were methyl 7,8-dihydroxyisoquinoline-3-carboxylate (12) (IC50 = 0.2 muM) and 7,8-dihydroxyisoquinoline-3-carboxamide (13) (IC50 = 0.5 muM). Inhibition by 12 was not competitive with respect to ATP. These compounds may represent important new structural motifs for the development of p56lck inhibitors.
Burke (Jr) Terrence R., Lim Benjamin, Marquez Victor E., Li Zhen-Hong, Bo+, J. Med. Chem., 36 (1993) N 4, S 425-432
作者:Burke (Jr) Terrence R., Lim Benjamin, Marquez Victor E., Li Zhen-Hong, Bo+
DOI:——
日期:——
Rosenmund; Boehm, Justus Liebigs Annalen der Chemie, 1924, vol. 437, p. 143