Scalable and Divergent Total Synthesis of (+)-Colletoic Acid, a Selective 11β-Hydroxysteroid Dehydrogenase Type 1 Inhibitor
摘要:
An efficient and divergent total synthesis of (+)-colletoic acid, a selective 11-beta hydroxysteroid dehydrogenase 1 (11-beta HSD1) inhibitor, is presented along with its biological activity at the whole-cell level. A scalable, asymmetric synthetic strategy was designed featuring a diversity-oriented synthesis utilizing a diastereoselective intramolecular 5-exo-Heck reaction as the key step to provide the quaternary spirocenter intermediate 9 in multigram scale, thus establishing a platform for further structure-activity relationship studies and providing access to other acorane family members.
Enantioselective Total Synthesis of (+)-Colletoic Acid via Catalytic Asymmetric Intramolecular Cyclopropanation of an α-Diazo-β-keto Diphenylphosphine Oxide
作者:Takashi Sawada、Masahisa Nakada
DOI:10.1021/ol303459x
日期:2013.3.1
The enantioselective totalsynthesis of (+)-colletoic acid, a potent naturally occurring 11β-hydroxysteroid dehydrogenase type 1 (11β-HSD1) inhibitor, is described. This totalsynthesis features a highly enantioselective catalytic asymmetric intramolecular cyclopropanation of an α-diazo-β-keto diphenylphosphine oxide and five highly stereoselective reactions (cyclopropane opening, Diels–Alder reaction
An efficient and divergent total synthesis of (+)-colletoic acid, a selective 11-beta hydroxysteroid dehydrogenase 1 (11-beta HSD1) inhibitor, is presented along with its biological activity at the whole-cell level. A scalable, asymmetric synthetic strategy was designed featuring a diversity-oriented synthesis utilizing a diastereoselective intramolecular 5-exo-Heck reaction as the key step to provide the quaternary spirocenter intermediate 9 in multigram scale, thus establishing a platform for further structure-activity relationship studies and providing access to other acorane family members.
Mechanistic Insight on the Mode of Action of Colletoic Acid
作者:Taotao Ling、Darcie J. Miller、Walter H. Lang、Elizabeth Griffith、Adaris Rodriguez-Cortes、Ikbale El Ayachi、Gustavo Palacios、Jaeki Min、Gustavo Miranda-Carboni、Richard E. Lee、Fatima Rivas
DOI:10.1021/acs.jmedchem.9b00187
日期:2019.8.8
important for enzymatic activity; an X-ray crystal structure of 11β-HSD1 bound to CA at 2.6 Å resolution revealed the nature of those interactions, namely, a close-fitting and favorable interactions between the constrained CA spirocycle and the catalytic triad of 11β-HSD1. Structure-activity relationship studies culminated in the development of a superior CA analogue with improved target engagement. Furthermore
天然产物colletoic酸 (CA) 是 11β-羟基类固醇脱氢酶 1 (11β-HSD1) 的选择性抑制剂,主要将可的松转化为活性糖皮质激素 (GC) 皮质醇。在这里,公开了 CA 的作用模式及其作为研究脂肪生成中细胞内 GC 信号传导的化学工具的潜力。CA 的 11β-HSD1 生化研究表明其 C-1、C-4 和 C-9 的官能团对酶活性很重要;以 2.6 Å 分辨率与 CA 结合的 11β-HSD1 的 X 射线晶体结构揭示了这些相互作用的性质,即受约束的 CA 螺环与 11β-HSD1 的催化三联体之间的紧密配合和有利的相互作用。结构-活性关系研究最终开发出具有改进目标参与度的高级 CA 类似物。此外,我们证明 CA 通过 11β-HSD1 抑制选择性抑制前脂肪细胞分化,抑制脂肪生成的其他相关关键驱动因素(即 PPARγ、PGC-1α),大概是通过负调节糖皮质激素信号通路。综合研究结果对