期刊
ORGANIC LETTERS
卷 12, 期 9, 页码 2108-2111出版社
AMER CHEMICAL SOC
DOI: 10.1021/ol100591r
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资金
- DST (New Delhi) [SR/S1/OC-38/2005]
- CSIR
- UGC (New Delhi)
An activation of the pyridine nucleus has been achieved via 1,5-electrocyclization of vinyl pyridinium ylides generated from bromo isomerized Morita-Baylis-Hillman adducts of isatin and pyridine under basic conditions. The method has been successfully applied for an efficient synthesis of a number of 3-spirodihydroindolizine-2-oxindoles, which have been found as core structure of secoyohimbane and heteroyohimbane alkaloid natural products.
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