Synthetic studies on soft coral norcembranolides: total synthesis of (+)-10-epigyrosanolide E
摘要:
Total synthesis of (+)-10-epigyrosanolide E was accomplished employing SmI2-mediated 5-exo cyclization of an aldehydo beta-alkoxyvinyl sulfoxide and ring-closing metathesis reaction. (C) 2011 Elsevier Ltd. All rights reserved.
Synthetic studies on soft coral norcembranolides: total synthesis of (+)-10-epigyrosanolide E
摘要:
Total synthesis of (+)-10-epigyrosanolide E was accomplished employing SmI2-mediated 5-exo cyclization of an aldehydo beta-alkoxyvinyl sulfoxide and ring-closing metathesis reaction. (C) 2011 Elsevier Ltd. All rights reserved.
Synthesis and Multiplexed Activity Profiling of Synthetic Acylphloroglucinol Scaffolds
作者:Jonathan H. Boyce、Benjamin J. Reisman、Brian O. Bachmann、John A. Porco
DOI:10.1002/anie.202010338
日期:2021.1.18
formic‐acid‐mediated rearrangements of dearomatized acylphloroglucinols to access a structurally diverse group of synthetic acylphloroglucinol scaffolds (SASs). Density‐functional theory (DFT) optimized orbital and stereochemical analyses shed light on the mechanism of these rearrangements. Products were evaluated by multiplexed activity profiling (MAP), an unbiased platform which assays multiple biological readouts
Regiodivergent Photocyclization of Dearomatized Acylphloroglucinols: Asymmetric Syntheses of (−)-Nemorosone and (−)-6-<i>epi</i>-Garcimultiflorone A
作者:Saishuai Wen、Jonathan H. Boyce、Sunil K. Kandappa、Jayaraman Sivaguru、John A. Porco
DOI:10.1021/jacs.9b05600
日期:2019.7.17
Regiodivergent photocyclization of dearomatized acylphloroglucinol substrates has been developed to produce type A polycyclic polyprenylated acylphloroglucinol (PPAP) derivatives using an excited-state intramolecular proton transfer (ESIPT) process. Using this strategy, we achieved the enantioselective total syntheses of the type A PPAPs (-)-nemorosone and (-)-6- epi-garcimultiflorone A. Diverse photocyclization
已开发出脱芳构化酰基间苯三酚底物的区域发散光环化,以使用激发态分子内质子转移 (ESIPT) 过程生产 A 型多环聚异戊二烯化酰基间苯三酚 (PPAP) 衍生物。使用这种策略,我们实现了 A 型 PPAPs (-)-nemorosone 和 (-)-6-epi-garcimultiflorone A 的对映选择性全合成。 已经研究了不同的光环化底物,导致不同的光环化过程作为系绳长度的函数。进行了光物理研究,并基于对各种底物的研究以及氘标记实验提出了光环化机制。
Syntheses of (+)-30-<i>epi</i>-, (−)-6-<i>epi</i>-, (±)-6,30-<i>epi</i>-13,14-Didehydroxyisogarcinol and (±)-6,30-<i>epi</i>-Garcimultiflorone A Utilizing Highly Diastereoselective, Lewis Acid-Controlled Cyclizations
作者:Jonathan H. Boyce、Vincent Eschenbrenner-Lux、John A. Porco
DOI:10.1021/jacs.6b09727
日期:2016.11.9
The first syntheses of 13,14-didehydroxyisogarcinol (6) and garcimultiflorone A (5) stereoisomers are reported in six steps from a commercially available phloroglucinol. Lewis acid-controlled, diastereoselective cationic oxycyclizations enabled asymmetricsyntheses of (-)-6-epi-6 and (+)-30-epi-6. A similar strategy enabled production of the meso-dervied isomers (±)-6,30-epi-6 and (±)-6,30-epi-5. Finally