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Crystal and molecular structure of p-methoxybenzyl 2α-methyl-2β-[(R)-acetoxy(methoxy)methyl]-6β-phenoxyacetamidopenam-3α-carboxylate

✍ Scribed by Domiano, P. ;Nardelli, M. ;Balsamo, A. ;Macchia, B. ;Macchia, F.


Book ID
114526136
Publisher
International Union of Crystallography
Year
1979
Weight
899 KB
Volume
35
Category
Article
ISSN
0567-7408

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CH,(18) + 14-CH3; 2.07, s CH,( 4) (CDCI,);not yet crystalli~ed]~). Finally, 8 was converted by catalytic hydrogenation [5%-Pd/C in ethanol/triethylamine; + 11 and cyclisation [HCl in acetic acid] into 3-oxo-17~-acetoxy-14a-methyl-A4-8a,9B,lOa,13a-estrene (12) [m.p. 86-88'; -[ U ] D = + 1' (CHC1,).