Jh. Rigby et al., SYNTHETIC STUDIES ON THE INGENANE DITERPENES - CONSTRUCTION OF AN ABCTRICYCLE EXHIBITING TRANS-INTRABRIDGEHEAD STEREOCHEMISTRY, Tetrahedron letters, 39(16), 1998, pp. 2265-2268
Intramolecular, metal-promoted [6 pi+4 pi] cycloaddition followed by a
lkoxide accelerated 1,5-H sigmatropy affords a functionalized ingenane
tricycle possessing the critical in,out-intrabridgehead stereochemica
l relationship. (C) 1998 Elsevier Science Ltd. All rights reserved.