[GRAPHICS] The first synthesis of (-)-dysiherbaine has been accomplished using intramolecular S(N)2 substitutions of a carbamate anion on an epoxide and an alkoxide on a secondary mesylate to efficiently construct the bicyclic skeleton stereospecifically from xylose, A general sequence has been developed to introduce an allyl group and convert it to the alanine side chain that should be useful for the construction of dysiherbaine analogues.
机构:
Univ Paris 05, Lab Pharmacognosie, CNRS, UMR 8638,Sorbonne Paris Cite, F-75006 Paris, FranceUniv Paris 05, Lab Pharmacognosie, CNRS, UMR 8638,Sorbonne Paris Cite, F-75006 Paris, France