A diastereoselective tandem metalloenamine alkylation/aza-annulation of β-tetralones expedites the synthesis of benzoquinolinones
作者:James E. Audia、James J. Droste、James M. Dunigan、John Bowers、Perry C. Heath、Dale W. Holme、Jill H. Eifert、Harry A. Kay、Richard D. Miller、Jorge M. Olivares、Thomas F. Rainey、Leland O. Weigel
DOI:10.1016/0040-4039(96)00724-1
日期:1996.6
In one operation, metalloenamines derived from R-phenylethylamine (PEA) and a β-tetralone were treated with an electrophile followed by acrylic anhydride. The unpurified lactams were reduced to give 10b-angular benzoquinolinones (BQs).
Synthesis of the individual enantiomers of the benzoquinolinone human type 1 steroid 5-α-reductase inhibitors LY191704 and LY266111
作者:James E. Audia、David E. Lawhorn、Jack B. Deeter
DOI:10.1016/s0040-4039(00)61581-2
日期:1993.10
syntheses of the individual enantiomers of the benzoquinolinone class of selective inhibitors of human Type 1 steroid 5-α-reductase are described. For benzoquinolinones lacking an angular substituent, the approach relies upon an enamine acryloyl chloride cyclization followed by non-stereoselective reduction and diastereomer separation. Absolute configuration was established by single crystal x-ray diffraction