Structure-Based Design of a New Class of Protein Kinase C Modulators
作者:Lixin Qiao、Shaomeng Wang、Clifford George、Nancy E. Lewin、Peter M. Blumberg、Alan P. Kozikowski
DOI:10.1021/ja980513u
日期:1998.7.1
its analogues have been reported. The available X-ray structure of PKCδ in complex with phorbol 13-acetate10 provides information invaluable to the design of newclasses of PKC modulators. This paper presents the first example of the structure-baseddesign, synthesis, and biological activities of certain γ-lactams as novel mimics of ILV.
蛋白激酶 C (PKC) 是一种普遍存在的甘油二酯 (DAG) 激活的信号转导酶系统,与多种生物事件相关,包括离子通道调节、神经递质释放、生长和分化、细胞凋亡和神经元可塑性。 1 除了甘油二酯,2 PKC 的内源性激活剂、几种复杂的天然产物及其类似物,如佛波酯、苔藓抑素、远杀霉素和吲哚内酰胺 V (ILV) 可以模拟 DAG 在低浓度下激活 PKC。3-5 合成,6-8 分子建模, 6,9-11 和 ILV 及其类似物的构效关系 12,13 已有报道。PKCδ 与佛波醇 13-乙酸酯复合的可用 X 射线结构为设计新型 PKC 调制器提供了宝贵的信息。
Mixed Cyano-Gilman Cuprates - Advances in Conjugate Addition to α,β-Unsaturated Pyroglutaminol
Conjugate addition of lower order cuprates to protected α,β-unsaturated pyroglutaminol 1 is of limited value, mainly due to the requirement for a large excess of the transferable ligand (10 equiv). Here we report advances using mixed cyano-Gilman cuprates which allow the use of only 1.2 equiv of the transferable ligand, to give the desired product in acceptable to good yield (68-84%). Diethyl ether as the solvent was found advantageous versus THF, since the use of TMSCl could be avoided.