Chemical asymmetric syntheses of the keyintermediates (4,6,8) for the synthesis of monobactam antibiotics (SQ 26776 (azthreonam), sulfazecin, and SQ 26180) are accomplished from (±)-4-phenylsulfonyl-2-azetidinone.
Asymmetric synthesis of β-lactams using a Pummerer reaction
作者:Takushi Kaneko、Yashio Okamoto、Kiochi Hatada
DOI:10.1039/c39870001511
日期:——
Resolution of 3-phenylsulphinylpropionamide by a cellulose tribenzoate h.p.l.c. column was achieved and the resulting sulphoxides were converted to optically active β-lactams with high efficiency.