A. Basak et al., Active site geometry of porcine pancreatic lipase: An interesting switchover from Jones' to Seebach's model, BIOORG MED, 11(3), 2001, pp. 305-307
Porcine pancreatic lipase (PPL)-catalyzed hydrolysis of cis 3-acetoxyethyl-
1,4-diphenyl and cis 3-acetoxyethyl-1-phenyl-4-(2-furyl) beta -lactams 1a a
nd 1b proceeded with opposite stereoselectivity while the corresponding thi
enyl beta -lactam 1c showed no selectivity at ail. An explanation based upo
n the dominance of hydrophobic and polar pockets in governing the stereosel
ectivity has been proposed. (C) 2001 Elsevier Science Ltd. All rights reser
ved.