A carbohydrate based approach towards the synthesis of aspercyclide C
作者:C.V. Ramana、Mohabul A. Mondal、Vedavati G. Puranik、Mukund K. Gurjar
DOI:10.1016/j.tetlet.2007.08.050
日期:2007.10
A formal totalsynthesis of aspercyclide C (3) is described in which d-ribose is employed as a chiral pool material. The key step is a ring closing metathesis.
strategies were necessary to bring the individual members of the aspercyclide family into reach. Whereas the strained eleven‐membered ring of aspercyclide C (see figure) could be closed by RCM, it required the power of organochromium chemistry (Nozaki–Hiyama–Kishi reaction) to forge the frame of its sterically even more hindered congener aspercyclide B.