Total synthesis of R-(+)-patulolide A and R-(−)-patulolide B: The macrolides isolated from Penicillium urticae mutant
摘要:
The title compounds (2E,11R)-4-oxo-2-dodecen-11-olide, 1 and (2Z,11R)-4-oxo-2-dodecen-11-olide, 2 were synthesised in optically pure forms from a nitroalkane synthon involving a chiral resolution step using goat liver lipase. (C) 1999 Published by Elsevier Science Ltd. All rights reserved.
作者:Hans Jürgen Bestmann、Wilfried Kellermann、Bernd Pecher
DOI:10.1055/s-1993-25820
日期:——
Synthesis of (R)-(+)-Patulolide A A new total synthesis of (R)-(+)-patulolide A [(11R,2E)-4-oxo-2-dodecen-11-olide] using the cyclization reaction of hydroxy aldehydes with ketenylidenetriphenylphosphorane is described.
(R)-(+)-Patulolide A 的合成: 描述了一种新的 (R)-(+)-patulolide A [(11R,2E)-4-氧-2-十二碳烯-11-内酯] 的全合成方法,该方法利用了羟基醛与乙烯叉基三苯基膦的环化反应。
Ring Expansions of β-Keto Lactones with Zinc Carbenoids: Syntheses of (+)-Patulolide A and (±)-Patulolide B
作者:Matthew D. Ronsheim、Charles K. Zercher
DOI:10.1021/jo0264776
日期:2003.3.1
A one-pot ringexpansion/oxidation/elimination method has been developed in which beta-keto lactones are converted efficiently to alpha,beta-unsaturated-gamma-keto lactones. The reaction can be successfully applied to a variety of ring sizes. Alkene stereochemistry is dependent upon ring size and reaction conditions. The method was applied to the synthesis of (+)-patulolide A.
Total synthesis of patulolide A through ring closing metathesis
作者:N. J. P. Subhashini、B. Bhadraiah、P. Janaki、Gattu Sridhar
DOI:10.1080/00397911.2017.1384019
日期:2018.3.4
ABSTRACT A simple and efficient totalsynthesis of patulolide A from readily available 7-octen-1-ol is reported by asymmetric synthetic approach. The key reactions involved are asymmetric dihydroxylation using AD-mix-β and Grubbs’ ring-closing metathesis reaction for the synthesis macrocyclic ringsystem. GRAPHICAL ABSTRACT
A new totalsynthesis of [R]‐Patulolide A from readily available (R)‐propylene epoxide obtained using the asymmetric synthetic approach is reported. The key reactions involved are ozonolysis and Yamaguchi macrolactonization, resulting in the ring system.
据报道,使用不对称合成方法从易于获得的(R)-环氧丙烷中可合成新的[ R ] -PatulolideA 。涉及的关键反应是臭氧分解和山口宏观内酯化,形成环系统。
Expedient Synthesis of (<i>R</i>)-Patulolide A
作者:A. Sharma、S. Sankaranarayanan、S. Chattopadhyay
DOI:10.1021/jo951339k
日期:1996.1.1
An efficient derivation of the title compound has been formulated from easily accessible 10-undecenoic acid(1). Thus, dodec-11-en-2-ol (3), prepared from 1, was pyranylated and subjected to bromination with NBS followed by acetolysis to furnish (2E)-1-acetoxy-11-(tetrahydropyranyloxy)-dodec-2-ene (5). Its hydrolysis, oxidation, and depyranylation afforded the (2E)-hydroxy ester (9). This, on Candida rugosa lipase-catalyzed acetylation, SeO2 oxidation, hydrolysis, and Yamaguchi macrolactonization, led to (R)-patulolide A (I) with 67.1% ee. The enantiomeric excess was improved to 97% by first resolving the alcohol 3 via porcine pancreatic lipase catalyzed acetylation and converting the corresponding (R)-acetate (13) to I as done above.