
Tetrahedron Letters p. 2153 - 2156 (1994)
Update date:2022-08-03
Topics:
Zhang, Zhao-Rong
Flachsmann, Felix
Moghaddam, Firouz Matloubi
Rueedi, Peter
A series of tanshinone-type diterpenoids was prepared by ultrasound-promoted and Lewis acid catalyzed, highly regioselective cycloadditions of styrenes with substituted 1,4-benzoquinones as the key step.
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(1994)