中文名称 | 英文名称 | CAS号 | 化学式 | 分子量 |
---|---|---|---|---|
—— | (4S,5S)-4-(4-methoxybenzyl)oxy-3,3-dimethyl-5-((2-trimethylsilyl)ethoxy)methoxy-6-hepten-2-one | 144681-69-6 | C23H38O5Si | 422.637 |
The formal total synthesis of the marine metabolite (+)-calyculin A is reported. The key steps involve (i) the use of Brown allylboration chemistry to control the relative and absolute stereochemistry of homoallylic alcohol arrays, thus setting eight of the desired stereocenters; (ii) Stille coupling methodology in the construction of the cyano tetraene unit of the natural product; and (iii) a modified CornforthMeyers approach to the synthesis of the oxazole fragment.Key words: calyculin, marine natural product, phosphatase inhibitor, total synthesis, palladium catalyzed coupling reactions, allylboration reactions, aldol reactions, spiroketal, CornforthMeyers oxazole reaction.