An article Total Synthesis of (+)-Nivetetracyclate A WOS:000457947900045 published article about RING in [Blitz, Michel; Harms, Klaus; Koert, Ulrich] Philipps Univ Marburg, Fachbereich Chem, Hans Meerwein Str 4, D-35043 Marburg, Germany; [Heinze, Robert C.] Free Univ Berlin, Inst Chem & Biochem, Takustr 3, D-14195 Berlin, Germany in 2019.0, Cited 17.0. The Name is 2,5-Dimethoxybenzaldehyde. Through research, I have a further understanding and discovery of 93-02-7. SDS of cas: 93-02-7
A stereoselective synthetic approach to the natural product (+)-nivetetracyclate A is reported. The tetracyclic skeleton was assembled in a convergent manner by an alkylation to a diarylmethane and subsequent Friedel-Crafts acylation. Further key steps are an asymmetric Sharpless epoxidation and the boron trifluoride-mediated diastereoselective rearrangement of an epoxy alcohol to a beta-hydroxy aldehyde. Optimized timing for the deprotection step and the chemo- and stereoselective Noyori-transfer hydrogenation of a 1,4-diketone allowed the late stage introduction of the C4 stereocenter.
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Reference:
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