A. Otto et al., Stereoselective synthesis of 3-(omega-hydroxyalkyl)-2-pyrrolidinones from alpha-alkylidenelactones and nitromethane, TETRAHEDR-A, 10(17), 1999, pp. 3381-3389
Enantiopure 3-(omega-hydroxyalkyl)-2-pyrrolidinones 7 and 9 were synthesise
d by Michael-addition of nitromethane to chiral alpha-alkylidenelactones 1
followed by reduction of the resulting 3-(beta-nitroalkyl)-lactones and rin
g transformation of the intermediate 3-(beta-aminoalkyl)-lactones. In an an
alogous manner the naturally occurring costuslactone 10 was transformed int
o the butyrolactam 12. (C) 1999 Elsevier Science Ltd. All rights reserved.