名称:
Synthetic studies towards paspalicine: Preliminary investigations, and the synthesis of 3′,4′,7′,7′a,9′,10′,11′,11′a-octahydro-4′,4′,7′a-trimethylspiro[1,3-dioxolane]-2,8′(6′H)-2′H-3′,5′a-epoxynaphth [2,1-b]oxepin-2′-one
摘要:
Preliminary investigations directed towards the synthesis of the indole-diterpene mould metabolite, paspalicine 1, are described. Following the preparation of the beta-pyrone ketal 7, which contains the characteristic functional group of paspalicine, the compound 25, which constitutes rings D-G of paspalicine with the correct relative stereochemistry, has been synthesised in eight steps from the monoketal 12 of the Wieland-Miescher ketone, in an overall yield of 8%.