Monatshefte fur Chemie p. 939 - 948 (1992)
Update date:2022-08-04
Topics:
Reimann, Eberhard
Benend, Helmut
A novel synthesis to prepare dibenzo-8-quinolizinones 8 is reported using the intramolecular cyclisation of the benzylated Reissert compounds 6 for the key step.Methylation of 8 by methyllithium gives partial deoxygenated coralynes 10 which in turn can be reduced by NaBH4 yielding the 8-methyltetrahydro-protoberberines 11.The structures are assigned by NMR-spectroscopy. Keywords.Reissert compounds; Intramolecular cyclisation; Dibenzo
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Doi:10.1016/j.tetlet.2017.04.036
(2017)Doi:10.1002/anie.201901346
(2019)Doi:10.1016/S0040-4039(00)60026-6
(1992)Doi:10.1055/s-0034-1380499
(2015)Doi:10.1016/S0040-4039(00)60006-0
(1992)Doi:10.1021/ml400489b
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