H. Shimizu et al., Synthesis of (+)-epiepoformin using the base-catalyzed Diels-Alder reaction of 3-hydroxy-2-pyrone, TETRAHEDR L, 42(49), 2001, pp. 8649-8651
Asymmetric total synthesis of (+)-epiepoformin was achieved in short steps
using the base-catalyzed asymmetric Diels-Alder (DA) reaction of 3-hydroxy-
2-pyrone with chiral acrylate. Since the synthesis produced Ogasawara's int
ermediate, it is also presented as a formal synthesis of (-)-theobroxide. (
C) 2001 Elsevier Science Ltd. All rights reserved.