Synthesis of erythrinin A, a naturally occurring pyranoisoflavone
作者:R.V. Suresh、C.S. Rukmani Iyer、P.R. Iyer
DOI:10.1016/s0040-4020(01)96643-8
日期:1985.1
Erythrinin A (10) has been synthesised by the oxidative rearrangement of dihydropyranochalcone 1 with thallium(III) nitrate (TTN) in trimethyl orthoformate (TMOF) to the dimethyl acetal 2, followed by cyclisation to 3, demethylation to 6 and dehydrogenation. Compound 10 could also be obtained from chalcone 4 on similar rearrangement followed by cyclisation, demethoxymethylation and dehydrogenation