本文中,我们介绍了有效的和高度选择性的β-分泌酶2(memapsin 1,β位淀粉样蛋白前体蛋白裂解酶2或BACE 2)抑制剂的设计,合成和生物学评估。BACE2被公认为是2型糖尿病激动人心的新靶标。BACE1的X射线结构与抑制剂2 a {N3-[(1S,2R)-1-苄基-2-羟基-3-[[(1S,2S)-2-羟基-1-(异丁基氨基甲酰基)丙基测定了含有羟乙胺等排异构体的[氨基]丙基] -5- [甲基(甲基磺酰基)氨基] -N1-[((1R)-1-苯基丙基]苯-1,3-二甲酰胺)。基于该结构,进行了计算对接研究,其导致了抑制剂2a-结合的BACE2模型。这些用于优化抑制剂的效力和选择性。一项系统的结构-活性关系研究导致确定抑制剂对BACE2酶的效力和选择性的决定因素。抑制剂2 d [N3-[(1S,2R)-1-苄基-2-羟基-3-[[(1S,2S)-2-羟基-1-(异丁基氨基甲酰基)戊基]氨基]丙基]
A tandem Aldol-Grob reaction of ketones with aromatic aldehydes
作者:George W. Kabalka、David Tejedor、Nan-Sheng Li、Rama R. Malladi、Sarah Trotman
DOI:10.1016/s0040-4020(98)00976-4
日期:1998.12
Aromatic aldehydes react with ketones to produce(E)-1-aryl-1-alkenes via a tandem Aldol-Grob cleavage reaction sequence. The reaction, initiated by boron trifluoride, also produces a carboxylic acid fragment.
Nickel-Catalyzed Alkylation or Reduction of Allylic Alcohols with Alkyl Grignard Reagents
作者:Bo Yang、Zhong-Xia Wang
DOI:10.1021/acs.joc.0c00008
日期:2020.4.3
selective alkylation and reduction of allylicalcohols with alkyl Grignard reagents were performed. The reaction using Ni(dppe)Cl2 as the catalyst resulted in the cross-coupling of allylicalcohols with primary alkyl Grignard reagents and cyclopropylmagnesium bromide. The reaction catalyzed by the combination of Ni(PCy3)2Cl2 and dcype led to the reduction of allylicalcohols. Secondary alkyl Grignard