The S configuration of the C2 carbon of the penam derivative 6 was unequivocally determined by means of X-ray crystallographic analysis. Crystals are monoclinic, space group P2, with Z = 2, unit cell dimensions a = 9.252(3), b = 15.075(2), c = 10.463(1) À, (:I = 111.76°. The structure was solved by direct methods and refined by a least-squares procedure to an R value ofO.050 for 2482 observed independent reflections. The relevant molecular parameters of 6 are compared with the corresponding ones of other penam derivati ves.
|Autori:||P. DOMIANO; A. BALSAMO; I.GIORGI; B.MACCHIA F. MACCHIA; ROSSELLO A|
|Titolo:||Crystal and molecular structure of 2ß-acetoxymethyl-3α-methoxy-2α-methyl-3ß-(p-nitrobenzoyloxymethyl)-6ß-phenoxyacetamidopenam|
|Anno del prodotto:||1987|
|Appare nelle tipologie:||1.1 Articolo in rivista|