FD-891, a structurally unique 16-membered macrolide having anticancer activity, was synthesized according to a strategy employing asymmetric allylation, Prins cyclization, cross-metathesis reaction, Yamaguchi lactonization, and Julia-Kocienski olefination.
Stereoselective Synthesis of <i>anti</i>-1,3-Aminoalcohols <i>via</i> Reductive Opening of 4-Amidotetrahydropyrans Derived from the Prins/Ritter Sequence
作者:J. S. Yadav、Y. Jayasudhan Reddy、P. Adi Narayana Reddy、B. V. Subba Reddy
DOI:10.1021/ol303364j
日期:2013.2.1
A novel method has been devised for anti-1,3-aminoalcohols through reductive elimination of iodomethyltetrahydropyrans which are in turn derivedfrom a Prins/Ritter reaction sequence. The synthetic versatility of this method has been explored in the total synthesis of piperidine alkaloids and β-amino acids.
Synthesis of the Spiroketal Fragment of (-)-Ushikulide A
作者:Jhillu S. Yadav、N. Mallikarjuna Reddy、Md. Ataur Rahman、Attaluri R. Prasad
DOI:10.1002/ejoc.201402196
日期:2014.9
The stereoselectivesynthesis of the spiroketal fragment of the immunosuppressant (–)-ushikulide A is described. The salient feature of this synthesis is the construction of the spiroketal moiety by hydrolysis of a dialkylated tosylmethyl isocyanide derivative derived from alkylation of tosylmethyl isocyanide (TosMIC) with suitably substituted halohydrin derivatives. The key functionalized tetrahydropyran
描述了免疫抑制剂 (-)-ushikulide A 的螺旋缩酮片段的立体选择性合成。该合成的显着特征是通过二烷基化甲苯磺酰基甲基异氰化物衍生物的水解构建螺缩酮部分,该衍生物衍生自甲苯磺酰基甲基异氰化物 (TosMIC) 与适当取代的卤代醇衍生物的烷基化。关键的官能化四氢吡喃环是通过使用 α-乙酰氧基醚的 Prins 环化构建的。
Synthesis of spiroketal fragment of ossamycin via Prins cyclization
An asymmetric synthesis of spiroketal fragment of an antitumour antibiotic, ossamycin is described. Coupling of aldehyde and alkyne fragments followed by spiroketalization has afforded the spiroketal sub unit of ossamycin. Both the sub targets were constructed via Prins cyclization. (C) 2014 Elsevier Ltd. All rights reserved.
Total synthesis of cryptophycin-24 (arenastatin A) via Prins cyclization
A stereoselective synthesis of fragment A of cryptophycin is achieved utilizing the versatile Prins cyclization. Subsequently, the total synthesis of cryptophycin-24 (arenastatin A) has been accomplished by coupling it with the depsipeptide subunit. (C) 2011 Elsevier Ltd. All rights reserved.