Tetrahedron Letters p. 5413 - 5416 (1993)
Update date:2022-08-05
Topics:
Martinelli
Peterson
Khau
Hutchison
Sullivan
Intramolecular cyclization of N-acylated meroquinene t-butyl esters in cold H2SO4 cleanly afforded cis-4a(S), 8a(R)-decahydro-6(2H)-isoquinolones with complete stereocontrol in >95% yield. Formation of the meroquinene esters from cinchona alkaloid autoxidation using an improved Doering protocol was accomplished in three steps with 85% overall yield.
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Doi:10.1007/s11164-017-3215-x
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(1992)Doi:10.1016/S0040-4039(01)80563-3
(1989)Doi:10.1016/S0040-4020(01)96945-5
(1965)Doi:10.1016/S0022-328X(03)00453-4
(2003)Doi:10.1246/bcsj.60.2453
(1987)
