A convenient and rapid approach for the synthesis ofpiperamide alkaloids la ~ h by the recently developed one-flask Ramberg-Baecklund reaction was described. The
The reactions of arylamine with ethyl acetoacetate catalyzed by a solid support are accelerated by microwave irradiation to result in a rapid and clean producti
Microwave-assisted allylic oxidation at C-13 position of 14-deoxysinenxan A wasdescribed. This new method (150℃/10 mir/5 bar on microwave synthesizer) led to a
A facile synthetic route to two seco-eudesmane, 4, 5-dioxo-10-epi-4, 5-seco-γeudesmane (1) and 4, 5-dioxo-10-epi-4, 5-seco-γ-eudesmol (2) from (+)-dihydrocarv