Total Synthesis of (−)-Chromodorolide B By a Computationally-Guided Radical Addition/Cyclization/Fragmentation Cascade
作者:Daniel J. Tao、Yuriy Slutskyy、Mikko Muuronen、Alexander Le、Philipp Kohler、Larry E. Overman
DOI:10.1021/jacs.7b13799
日期:2018.2.28
The first total synthesis of a chromodorolide marine diterpenoid is described. The core of the diterpenoid is constructed by a bimolecular radical addition/cyclization/fragmentation cascade that unites two complex fragments and forms two C-C bonds and four contiguous stereogenic centers of (-)-chromodorolide B in a single step. This coupling step is initiated by visible-light photocatalytic fragmentation
描述了 chromodorolide 海洋二萜的首次全合成。二萜的核心是通过双分子自由基加成/环化/断裂级联反应构建的,该级联反应将两个复杂片段结合在一起,并在一个步骤中形成两个 CC 键和 (-)-chromodorolide B 的四个连续立体中心。该偶联步骤由氧化还原活性酯的可见光光催化裂解引发,可在铱或不太贵的富电子二氰基苯光催化剂存在下完成,并使用等摩尔量的两个加成物。计算研究指导了合成的这一核心步骤的发展,并提供了对观察到的立体选择性起源的深入了解。
Farina, Francisco; Martin, Victoria M.; Sanchez, Felix, Heterocycles, 1986, vol. 24, # 9, p. 2587 - 2592
作者:Farina, Francisco、Martin, Victoria M.、Sanchez, Felix
DOI:——
日期:——
FARINA, F.;MARTIN, M. V.;SANCHEZ, F.;MAESTRO, M. C.;MARTIN, M. R., HETEROCYCLES, 1983, 20, N 9, 1761-1767
作者:FARINA, F.、MARTIN, M. V.、SANCHEZ, F.、MAESTRO, M. C.、MARTIN, M. R.
DOI:——
日期:——
Farina, Francisco; Martin, M. Victoria; Sanchez, Felix, Heterocycles, 1983, vol. 20, # 9, p. 1761 - 1767
作者:Farina, Francisco、Martin, M. Victoria、Sanchez, Felix、Maestro, M. Carmen、Martin, M. Rosario
DOI:——
日期:——
Characterization and stereochemistry of alkyl 2-chloro-3-formylacrylates: Experimental NMR and theoretical DFT studies
作者:T. M. Barhoumi-Slimi、M. T. Ben Dhia、M. Nsangou、M. M. El Gaied、M. R. Khaddar
DOI:10.1007/s10947-010-0039-6
日期:2010.4
The synthesis of alkyl 2-chloro-3-formylacrylates 1 from alkyl pyruvates was carried out using Vilsmeier reaction. The reaction is highly stereoselective and leads to a 95:5 mixture of Z and E stereoisomers. Both stereoisomers were characterized by 1H and 13C NMR. In CDCl3 solution, the NMR data, particularly the NOEDIFF experiments, show that the major species formed is the Z stereoisomer. Heating