Perylenequinone Natural Products: Total Syntheses of the Diastereomers (+)-Phleichrome and (+)-Calphostin D by Assembly of Centrochiral and Axial Chiral Fragments
作者:Barbara J. Morgan、Carol A. Mulrooney、Erin M. O’Brien、Marisa C. Kozlowski
DOI:10.1021/jo901384h
日期:2010.1.1
utilize an enantiopure biaryl common intermediate, which is formed via an enantioselective catalytic biaryl coupling. The established axial chirality is transferred to the perylenequinone helical stereochemistry with good fidelity. Additionally, efforts focused on the installation of the stereogenic C7,C7′-2-hydroxypropyl groups. Three routes were evaluated to establish the C7,C7′-stereochemistry, in which
概述了 (+)-calphostin D 的第一次全合成和 (+)-phleichrome 的全合成。收敛合成利用对映纯的联芳基共同中间体,其通过对映选择性催化联芳基偶联形成。建立的轴向手性以良好的保真度转移到苝醌螺旋立体化学。此外,努力集中在立体 C7,C7'-2-羟丙基基团的安装上。评估了三种路线以建立 C7,C7'-立体化学,其中成功的路线涉及具有复杂轴向手性双铜酸盐的双环氧化物烷基化。
Design, Synthesis, and Investigation of Protein Kinase C Inhibitors: Total Syntheses of (+)-Calphostin D, (+)-Phleichrome, Cercosporin, and New Photoactive Perylenequinones
作者:Barbara J. Morgan、Sangeeta Dey、Steven W. Johnson、Marisa C. Kozlowski
DOI:10.1021/ja902324j
日期:2009.7.8
The totalsyntheses of the PKC inhibitors (+)-calphostin D, (+)-phleichrome, cercosporin, and 10 novel perylenequinones are detailed. The highly convergent and flexible strategy developed employed an enantioselective oxidative biaryl coupling and a double cuprate epoxide opening, allowing the selective syntheses of all the possible stereoisomers in pure form. In addition, this strategy permitted rapid
Total syntheses of phleigchrome, calphostin A, and calphostin D. Unusual stereoselective and stereospecific reactions in the synthesis of perylenequinones
作者:Chris A. Broka
DOI:10.1016/s0040-4039(00)92105-1
日期:1991.2
This report describes the totalsynthesis of phleichrome, calphostin A and calphostin D- three protein kinase C inhibitory perylenequinones. The present route affords the targets in enantiomerically pure from and represents the first successful approach to this biologicaly important class of metabolites.
Synthesis of Helically Chiral Molecules: Stereoselective Total Synthesis of the Perylenequinones Phleichrome and Calphostin A
作者:Robert S. Coleman、Eugene B. Grant
DOI:10.1021/ja00149a012
日期:1995.11
The total syntheses of the perylenequinone natural products phleichrome and calphostin A are detailed. The syntheses were based on (1) the de novo construction of regiospecifically oxygenated and selectively protected naphthalene subunits, (2) the enantiospecific introduction of the stereogenic side chains using a chiral (alpha-alkoxyalkyl)-lithium reagent, and (3) a highly atropdiastereoselective Cu(I)-promoted biaryl synthesis for the stereoselective introduction of the helical axis of the calphostins. The total syntheses were achieved in 13 or 14 steps, respectively, with excellent control of absolute stereochemistry.
IIDA, TAKAO;KOBAYASHI, EIJI;YOSHIDA, MAYUMI;SANO, HIROSHI, J. ANTIBIOTICS, 42,(1989) N0, C. 1475-1481