Publications by authors named "L B Crast"

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Synthesis and in vitro activity of new semi-synthetic coumermycin analogs: chemical modification at the C-3 amide.
Y Ueda, J M Chuang, L B Crast, R A Partyka

J Antibiot (Tokyo)· September 1989

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Synthesis and beta-lactamase inhibitory properties of 2 beta-(chloromethyl)-2 alpha-methylpenam-3 alpha-carboxylic acid 1,1-dioxide.
W J Gottstein, L B Crast, R G Graham, U J Haynes, D N McGregor

J Med Chem· December 1981

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3-Acylthiomethyl cephalosporins.
J M Essery, U Corbin, V Sprancmanis, L B Crast, R G Graham

J Antibiot (Tokyo)· August 1974

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Synthesis of cephapirin and related cephalosporins from 7-(alpha-bromoacetamido)cephalosporanic acid.
L B Crast, R G Graham, L C Cheney

J Med Chem· December 1973

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Structure-activity relationships among a group of 7-(alpha-(N,N'-substituted-amidinothio)-acetamido) cephalosphoranic acids.
M Misiek, T A Pursiano, L B Crast, F Leitner, K E Price

Antimicrob Agents Chemother· January 1972

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