Chemical and microbial semi-synthesis of tetrahydroprotoberberines as inhibitors on tissue factor procoagulant activity
作者:Hai-Xia Ge、Jian Zhang、Ling Chen、Jun-Ping Kou、Bo-Yang Yu
DOI:10.1016/j.bmc.2012.11.002
日期:2013.1
13273, whereas compounds 4a, 4b, 5h, and 5i were microbial glycosylation products by Gliocladium deliquescens NRRL1086. The bioassay results showed that compounds 3 (tetrahydroberberine), 10 (tetrahydroberberrubine), and 5f (cinnamyl ester of 5) and 5i (glycosidic product of 5), exhibited the most potential effects, with IC50 values of 8.35, 6.75, 3.75, and 8.79 nM, respectively. The preliminary structure
为了发现对组织因子促凝活性的新抑制剂,在脂多糖刺激的人THP-1细胞模型上筛选了21种四氢小ber碱。化合物:在这些四氢原小檗碱,几个独特的化合物是通过微生物转化合成6(升-corydalmine)通过区域选择性脱甲基化,得到灰色链霉菌ATCC 13273,而化合物4A,4B,5H和5I由分别微生物糖基化产物粘帚deliquescens NRRL1086。生物测定结果表明,化合物3(四氢小ber碱),10(四氢小rub碱)和5f(5的肉桂酸酯)和5i(5的糖苷产物)表现出最大的潜在作用,IC 50值分别为8.35、6.75、3.75和8.79 nM。初步的结构和活性关系分析表明,A环的2,3-亚甲基二氧基是强抑制作用所必需的,手性中心C-14的R构型比S型产物具有更高的活性。化合物5的脂肪酸或芳香酸酯的形成,除了肉桂酸酯,将削弱其作用。还有趣的是注意到四氢小ber碱的糖基化将保持甚至增强抑