A. Solladiecavallo et al., STEREOSELECTIVE SYNTHESIS OF (4S,5R,6S)-4-(5,6-EPOXY-6-PHENYL)-GAMMA-LACTONE, Tetrahedron : asymmetry, 7(6), 1996, pp. 1797-1810
A short (7 steps) and efficient (45% overall yield) synthesis of (4S,5
R,6S)-4-(5,6-epoxy-6-phenyl)-gamma-lactone, a versatile intermediate t
oward possible HIV-1 protease inhibitors, is described. Two examples o
f trans-alpha-benzylation of the lactonic ring followed by a regiosele
ctive opening of the epoxide (with thiopropanamide) as well as an open
ing of the lactone ring with L-valine (2-methoxy-ethyl)-amide are also
given. Copyright (C) 1996 Elsevier Science Ltd