G. Vidari et al., Studies on the total synthesis of the saponaceolides. 1. Enantioselective synthesis of the spiroketal subunit, TETRAHEDR L, 40(15), 1999, pp. 3063-3066
An asymmetric synthesis of the tricyclic spiroketal subunit of the saponace
olides is described in which the absolute stereochemistry at C-2' and C-6'
is established through a conformationally and stereoelectronically controll
ed cyclization of a dihydroxyketone pyran Intermediate. (C) 1999 Elsevier S
cience Ltd. All rights reserved.