Asymmetric synthesis of isobenzofuranone derivatives and their unique character as protein kinase Cα (PKCα) activators
作者:Go Hirai、Yosuke Ogoshi、Megumi Ohkubo、Yuki Tamura、Toru Watanabe、Tadashi Shimizu、Mikiko Sodeoka
DOI:10.1016/j.tetlet.2009.03.069
日期:2009.7
Efficient enantio-selective synthesis of conformationally constrained diacylglycerol analogues, 7-substituted isobenzofuranone derivatives, originally developed by us as PKC alpha ligands, was achieved by asymmetric dihydroxylation and gamma-lactone formation via ortho-lithiation and carboxylation. A series of derivatives having straight and/or branched side chains were synthesized and evaluated, and low-nanomolar-concentration affinity ligands and highly potent PKC alpha activators were found among them. These potent ligands induced phenotypic change of K562 cells, which is characteristic of PKC activators. (C) 2009 Elsevier Ltd. All rights reserved.