I.R.C. Bick

Alkaloids ofBerberis laurina Billb. II. Two new phenolic biscoclaurine alkaloids

Die Isolierung von zwei neuen dauricinartigen AlkaloÏden, Espinin and Espinidin, ausBerberis laurina, und deren Strukturaufklärung durch Spektroskopie und Degradation werden beschrieben.

Belarine, a new bisbenzylisoquinoline alkaloid

Belarine gives O-methylisothanlicberine on methylation, and the structures of both alkaloids have been determined unequivocally by deuteriation experiments, including a novel Birch reduction in ND3.

Mass spectrometry of bisbenzylisoquinoline alkaloids. Part II. Alkaloids derived from one coclaurine and one isococlaurine unit

The mass spectra of thalmine, thalicberine, and related alkaloids have been analysed and the fragmentation patterns have in part been substantiated by deuteriation experiments.