An article Total Syntheses of (+)-Sarcophytin, (+)-Chatancin, (-)-3-Oxochatancin, and (-)-PavidolideB: A Divergent Approach WOS:000463739900055 published article about TRANSANNULAR DIELS-ALDER; ENANTIOSELECTIVE TOTAL-SYNTHESIS; ASYMMETRIC TOTAL-SYNTHESIS; SOFT CORAL; FURANOPHANE APPROACH; CHATANCIN; STRATEGY; KETONES; DITERPENOIDS; ANNULATION in [He, Chuan; Xuan, Jun; Rao, Peirong; Xie, Pei-Pei; Hong, Xin; Lin, Xufeng; Ding, Hanfeng] Zhejiang Univ, Dept Chem, Hangzhou 310058, Zhejiang, Peoples R China; [Ding, Hanfeng] Nankai Univ, Key Lab Elementoorgan Chem, Tianjin 300071, Peoples R China in 2019, Cited 53. The Name is Benzoic anhydride. Through research, I have a further understanding and discovery of 93-97-0. Quality Control of Benzoic anhydride
A concise and divergent approach for the total syntheses of four cembrane diterpenoids, namely (+)-sarcophytin, (+)-chatancin, (-)-3-oxochatancin, and (-)-pavidolideB, has been developed, and it also led to the structural revision of (-)-isosarcophytin. The key steps of the strategy feature a double Mukaiyama Michael addition/elimination, a Helquist annulation, two substrate-controlled facial-selective hydrations, and a pinacol rearrangement. The described syntheses not only achieved these natural products in an efficient manner, but also provided insight into the biosynthetic relationship between the two different skeletons.
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Reference:
Isothiazole – Wikipedia,
,Isothiazole – ScienceDirect.com