An enantioselective total synthesis of alkaloid (+)-alstonlarsine A is reported. The key step is a domino sequence comprising enamine formation and a Diels–Alder reaction. The developed methodology for indole C(2)-H carbenoidinsertion enabled closure of the 7-membered ring via intramolecular Horner–Wadsworth–Emmons reaction. This approach allowed for the synthesis of other scaffolds containing an
Chemistry and antiinflammatory activities of prodolic acid and related 1,3,4,9-tetrahydropyrano[3,4-b]indole-1-alkanoic acids. 1
作者:Christopher A. Demerson、Leslie G. Humber、Thomas A. Dobson、Rene R. Martel
DOI:10.1021/jm00236a017
日期:1975.2
The synthesis and antiinflammatory activities of a series of 23 novel 1,3,4,9-tetrahydropyrano[3,4-b]indole-1-alkanoic acids are described and some relationships between structure and activity are discussed. One of these compounds, 1,3,4,9-tetrahydro-1-propylpyrano[3,4-b]indole-1-acetic acid (prodolic acid, USAN), has been selected for further studies.
Ritchie, Robert; Saxton, J. Edwin, Journal of Chemical Research, Miniprint, 1990, # 2, p. 528 - 545