Isoform-Selective Inhibition of the Human UDP-glucuronosyltransferase 2B7 by Isolongifolol Derivatives
作者:Ingo Bichlmaier、Mika Kurkela、Tanmaya Joshi、Antti Siiskonen、Tobias Rüffer、Heinrich Lang、Bohumila Suchanová、Mikko Vahermo、Moshe Finel、Jari Yli-Kauhaluoma
DOI:10.1021/jm061204e
日期:2007.5.1
crystallographic data. The tricyclic derivatives were assessed as inhibitors of the human UDP-glucuronosyltransferase (UGT) 2B7. The phenyl-substituted secondary alcohol 26b was the best inhibitor in this series and its competitive inhibition constant was 18 nM. Compound 26b was not glucuronidated by UGT2B7 and other hepatic UGT enzymes, presumably due to the high steric hindrance exerted by its bulky phenyl
合成了一组48个三环倍半萜醇异长叶醇的衍生物。该组包括高手性和非对映异构的醇,胺,氯代醇,以及羧酸,膦酸及其相应的酯。差向异构化合物的绝对构型由2D NMR实验[梯度异核单量子相关性(gHSQC)和梯度核Overhauser增强光谱法(gNOESY)]分配,与晶体学数据一致。三环衍生物被评估为人类UDP-葡萄糖醛酸糖基转移酶(UGT)2B7的抑制剂。苯基取代的仲醇26b是该系列中最好的抑制剂,其竞争抑制常数为18 nM。化合物26b没有被UGT2B7和其他肝脏UGT酶葡萄糖醛酸化,大概是由于其庞大的苯基取代基所造成的高位阻。确定了其对亚家族1A和2B的另外14种UGT同工型的抑制活性,并且数据表明三环仲醇26b对UGT2B7具有高度选择性(真实选择性> 1000)。