Borontrifluoride catalyzed cyclization of costunolide. Synthesis of 4α-hydroxycyclocostunolide

✍ Scribed by Tikam C. Jain; J. Edmund McCloskey

• Book ID: 104247651
• Publisher: Elsevier Science
• Year: 1971
• Tongue: French
• Weight: 215 KB
• Volume: 12
• Category: Article
• ISSN: 0040-4039
• DOI: 10.1016/s0040-4039(01)96724-3

✦ Synopsis

N.M.R. spectra were obtained with Varian Associates HA-66 and Perkin-Elmer-R-12A spectrometers using MS as internal standard. Specific rotations were determined in CHC13 solution on a Perkin-Elmer model 141 polarimeter.