.beta.-lactams, methods for the preparation of taxanes, and sidechain-bearing taxanes
 Novel .beta.-lactams finding utility as intermediates in the preparation of sidechain-bearing taxes such as tall and tall derivatives. The present invention also relates to novel methods of coupling .beta.-lactams to form such sidechain-bearing taxes, and to novel sidechain-bearing taxes. 
Bristol-Myers Squibb Company
C C A
C07D C07D A61P
inventional inventional inventional
Ivan D. David J. Wen-Sen John K.
Trifunovich Kucera Li Thottathil