Total Synthesis of the Marine Macrolide Amphidinolide F
作者:Laurent Ferrié、Johan Fenneteau、Bruno Figadère
DOI:10.1021/acs.orglett.8b01020
日期:2018.6.1
A new and efficient convergent approach toward the synthesis of amphidinolide F is described through the assembly of three fragments. The two trans-tetrahydrofurans were built by a diastereoselective C-glycosylation with titanium enolate of bulky N-acetyloxazolidinethiones. The side chain was inserted by a Liebeskind–Srogl cross-coupling reaction. A sulfone condensation/desulfonylation sequence, a
Development and application of versatile bis-hydroxamic acids for catalytic asymmetric oxidation
作者:Allan U. Barlan、Wei Zhang、Hisashi Yamamoto
DOI:10.1016/j.tet.2007.03.071
日期:2007.7
preliminary results of our new designed C(2)-symmetric bis-hydroxamic acid (BHA) ligands and the application of the new ligands for vanadium-catalyzed asymmetric epoxidation of allylic alcohols as well as homoallylic alcohols. From this success we demonstrate the versatile nature of BHA in the molybdenum catalyzed asymmetric oxidation of unfunctionalized olefins and sulfides.
Studies for the Total Synthesis of Amphidinolide P
作者:David R. Williams、Brian J. Myers、Liang Mi、Randall J. Binder
DOI:10.1021/jo4002382
日期:2013.5.17
A convergent, enantiocontrolled total synthesis of the 15-memberedmacrolide, amphidinolide P, is described. The synthesis utilizes three nonracemic components for an efficient assembly of the macrolactone in 12 steps via the longest linear pathway. Key developments include studies of the Hosomi–Sakurai reaction for the formation of the C6–C7 bond, a “ligandless” palladium-mediated Stille cross-coupling
描述了 15 元大环内酯、amphidinolide P 的收敛、对映控制全合成。该合成利用三种非外消旋组分通过最长的线性途径在 12 步中有效组装大环内酯。主要进展包括研究 Hosomi-Sakurai 反应形成 C 6 -C 7键,“无配体”钯介导的乙烯基锡烷4和烯基溴5 的Stille 交叉偶联以产生高度官能化的二烯醇,以及通过中间体α-酰基烯酮的后期形成进行的热诱导的分子内内酯化。
Versatile route to 2,6-dideoxyamino sugars from non-sugar materials: Syntheses of vicenisamine and kedarosamine
A new strategy for the synthesis of 2,6-dideoxyamino sugars from non-sugar starting materials has been developed. The key reaction in this strategy is the acid-catalyzed intramolecular cyclization, by which a nitrogen functional group is introduced with simultaneous control of vicinal chiral centers. The synthesis of two kinds of 2,6-dideoxyamino sugars, D-vicenisamine and L-kedarosamine, by this strategy is described.
Enantiospecific synthesis of the C-9 to C-18 fragment of macbecins I and II
作者:Raymond Baker、W. Jon Cummings、Jerome F. Hayes、Anil Kumar
DOI:10.1039/c39860001237
日期:——
The synthesis of the C-9 to C-18fragment of macbecinsI and II has been accomplished via a novel cyclisation and stereospecific cuprate opening of a chiral epoxide.