(2R,3R)-3-Ammonio-1-(1-methoxycarbonyl-2-methyl-1-propenyl)-4-oxoazetidine-2-sulfonate Monohydrate: a New Chiral β-Lactam Synthon
作者:Z. Mandic、R. Kiralj、B. Kojic-Prodic、M. Kovacevic
DOI:10.1107/s0108270195014077
日期:1996.4.15
The title compound, a novel monocyclic beta-lactam, was prepared and chemically characterized by IR and H-1 NMR spectroscopy and X-ray structure analysis. C9H14N2O6S.H2O exists as a zwitterion crystallized with a water molecule. The four-membered lactam ring is slightly puckered, the ammonio and sulfonate groups are cis, and the aliphatic substituent is trans to these polar groups. Hydrogen bonds link the zwitterions and the water molecules into spirals parallel to the b axis, forming a two-dimensional network with base vectors along (100) and (010).