A total synthesis of (±)-α-cyclopiazonic acid using a cationic cascade as a key step
The indole alkaloid α-cyclopiazonic acid 1 has been synthesised by a route, which features at its core an acid-catalysed cationic cascade cyclisation terminated by a sulfonamide group.
Griffiths-Jones, Charlotte M.,Knight, David W.
experimental part
p. 8515 - 8528
(2011/11/29)
A total synthesis of (±)-α-cyclopiazonic acid using a cationic cascade
The indolic terpene alkaloid α-cyclopiazonic acid 1 has been prepared in 11 steps from indole-4-methanol 6; the key step is a carbocationic cascade, terminated by a 4-nitrosulfonamide group and initiated by benzylic carbocation formation directly from the
Haskins, Charlotte M.,Knight, David W.
p. 3162 - 3164
(2008/02/12)
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