A new, versatile and stereospecific route to unusual amino acids: the enantiospecific total synthesis of statine amide and its three stereoisomers
摘要:
Total syntheses of statine amide [(3S,4S)-4-amino-3-hydroxy-6-methylheptanamide] and its three stereoisomers are described in order to illustrate the versatility of a new route to beta-hydroxy-gamma-amino acids. The enantioselective Sharpless epoxidation of a racemic allylic alcohol is used to generate chiral intermediates. The allylic alcohol, 3-hydroxy-5-methyl-1-hexene, can be prepared in at least two different ways from readily available materials. The methodology that is described should prove applicable to the synthesis of other analogues of statine.
Application of Pd-Catalyzed C–H Alkylation Reaction in Total Syntheses of Twelve Amicoumacin-Type Natural Products
作者:Hui-Hong Wang、Zhao Li、Yi-Yue Feng、Gao-Feng Yin、Tao Shi、Dian He、Xiao-Dong Wang、Zhen Wang
DOI:10.1021/acs.orglett.1c02576
日期:2021.9.3
Enantioselective total syntheses of 12 amicoumacin-type natural products are accomplished with a palladium(II)-catalyzed C–H alkylation as the key step to furnish the 3,4-dihydroisocoumarin scaffold. The target chemicals are assembled in a convergent protocol by merging 3,4-dihydroisocoumarin derived amine part with categories of acid segments that are efficiently prepared by chemoselective catalytic
12 种阿米香豆素类天然产物的对映选择性全合成是通过钯 (II) 催化的 C-H 烷基化作为提供 3,4-二氢异香豆素支架的关键步骤完成的。通过将 3,4-二氢异香豆素衍生的胺部分与通过手性 1,2-二羟乙基呋喃-2(5H)-ones 的化学选择性催化氧化有效制备的酸链段类别合并,将目标化学品组装在一个收敛协议中。随后,研究了阿米香霉素对五种癌细胞系和一种正常细胞系的细胞毒性。
An enantiospecific and versatile synthesis of statine
作者:M. Saïah、M. Bessodes、K. Antonakis
DOI:10.1016/s0957-4166(00)80530-3
日期:1991.1
A short, enantiospecific synthesis of statine is described, starting from a readily available aldehyde. The control of chirality was effected by using the Sharpless asymmetric epoxidation procedure.