Cheng C.-Y.LING-WEI HSINLiou J.-P.2021-07-072021-07-071996404020https://www.scopus.com/inward/record.uri?eid=2-s2.0-0030581405&doi=10.1016%2f0040-4020%2896%2900649-7&partnerID=40&md5=b3f4f379f214fbad150ac3bcafdb340bhttps://scholars.lib.ntu.edu.tw/handle/123456789/570504Novel radical synthesis of morphine fragments spiro[benzofuran-3(2H),4'-piperidine] and octahydro-1H-benzofuro[3,2-e]isoquinolinejournal article10.1016/0040-4020(96)00649-72-s2.0-0030581405