METHOD FOR MAKING CERTAIN PYRANO[3',4':6,7]INDOLIZINO[1,2-b]QUINOLINONES
摘要
<p>A method for making 8-methyl-7-(1-oxopropyl)indolizino[1,2-b]quinolin-9(11H)-ones from 4-ethyl-4-hydroxy-1H-pyrano[3',4':6,7]indolizino[1,2-b]quinolin-3,14(4H, 12H)-diones.</p>
