New Synthetic Route to Spiroacetals. The 3,4-Dihydro-2H-pyran Approach to (+/-)-Talaromycin B
The nucleophylic cleavage of the oxirane (9) by the organocuprate derived from 3-ethyl-6-lithio-3,4-dihydro-2H-pyran (7) was the key step in a synthesis of racemic talaromycin B (12).A similar synthesis of desethyltalaromycin B (15) from (9) and 6-lithio-
Kocienski, Philip,Yeates, Clive
p. 1879 - 1884
(2007/10/02)
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