New quinolizidine alkaloids from cadia purpurea

✍ Scribed by J.L. van Eijk; M.H. Radema; C. Versluis

• Book ID: 104226104
• Publisher: Elsevier Science
• Year: 1976
• Tongue: French
• Weight: 134 KB
• Volume: 17
• Category: Article
• ISSN: 0040-4039
• DOI: 10.1016/s0040-4039(00)93815-2

✦ Synopsis

Prom Cadia purpurea (Picc.,Ait.), Caesalpiniaceae, a poisonous shrub from Ethiopia (Dire Dawa-Harrar), we earlier Isolated spartein, lupanin, 13-hydroxylupanin and esters of the last compound. 132) We now isolated four new alkaloids, which are unknown In nature as far as we know, No. 24 In the IR spectra of II and III we found an amide C=O absorption band of 1595 cm -1 CT. 1625 cm -1 in I. This shift is attributed to an intramolecular hydrogen bond. The above data result in the conclusion that II and III have an extra -3H at C,O .