Total Synthesis of (−)-Secu’amamine A Exploiting Type II Anion Relay Chemistry
作者:Heeoon Han、Amos B. Smith
DOI:10.1021/acs.orglett.5b02018
日期:2015.9.4
A total synthesis of (-)-secu'amamine A has been achieved exploiting TypeIIAnionRelayChemistry (ARC) to provide the full linear carbon and nitrogen skeleton in a single flask with the requisite stereochemistry and functionality. A mechanistic rationale is also proposed to account for the stereochemical outcome of the key aldol reaction leading to the advanced aza tricyclic core.
利用 II 型阴离子中继化学 (ARC) 实现了 (-)-secu'amamine A 的全合成,在单个烧瓶中提供完整的线性碳和氮骨架,并具有必要的立体化学和功能。还提出了机械原理来解释导致高级氮杂三环核心的关键羟醛反应的立体化学结果。
Anion Relay Chemistry Extended. Synthesis of a Gorgonian Sesquiterpene
作者:Amos B. Smith、Dae-Shik Kim、Ming Xian
DOI:10.1021/ol071281j
日期:2007.8.1
Extension of anionrelaychemistry (ARC) beyond the area of dithianes has been achieved by the design of two effectiveARClinchpins capable of three- and four-component couplings. To showcase the ARC tactic in natural product synthesis, a cytotoxic gorgonian linear sesquiterpene was constructed, and the absolute configuration assigned via the Kakisawa/Mosher method. The synthesis proceeded in five
Diversity-Oriented Synthesis of 2,4,6-Trisubstituted Piperidines via Type II Anion Relay Chemistry
作者:Amos B. Smith、Heeoon Han、Won-Suk Kim
DOI:10.1021/ol2010598
日期:2011.7.1
An effective, general protocol for the Diversity-Oriented Synthesis (DOS) of 2,4,6-trisubstituted piperidine congeners has been designed and validated. The successful strategy entails a modular approach to all possible stereoisomers of the selected piperidine scaffold, exploiting TypeIIAnionRelayChemistry (ARC), followed in turn by intramolecular SN2 cyclization, chemoselective removal of the dithiane
A Unified Synthetic Strategy to the Cryptocarya Family of Natural Products Exploiting Anion Relay Chemistry (ARC)
作者:Bruno Melillo、Amos B. Smith
DOI:10.1021/ol400857k
日期:2013.5.3
A unified synthetic strategy to the Cryptocarya family of natural products has been achieved employing four-component fragment unions in a "single flask" exploiting Anion Relay Chemistry (ARC). Functionalization of the ARC adducts permits rapid construction of five polyhydroxylated di- and tetrahydropyrone natural products of the Cryptocarya class (1-5), in a total of 7-9 steps from commercially available materials.
Anion Relay Chemistry: An Effective Tactic for Diversity Oriented Synthesis
作者:Amos B. Smith、Ming Xian
DOI:10.1021/ja057059w
日期:2006.1.1
An effective one-flask multicomponent linchpin coupling protocol employing the concept of anionrelaychemistry (ARC) was developed. This concept calls for addition of an anion (5) to an epoxide (6), bearing on a distal carbon a trialkyl silyl group and an anion stabilizing group (ASG), to furnish upon epoxide ring opening oxyanion 7. Addition of HMPA or other polar solvents to trigger a solvent controlled