Of simple isoquinolines

On the other hand, it provides good methods for the introduction of groups into the 1 - and 3-positions of simple isoquinolines. The compounds prepared by this method are listed in Table I. 

Simple isoquinolines are not found in the Menispermaceae of South America. The isoquinolone thalifoline (1) was identified from Abuta pahni [32], Benzyltetrahydroisoquinolines are the biogenetic precursors for aporphines, proaporphines, and oxoaporphines. Yet the only such compound isolated from South American Menispermaceae is (+) coclaurine (2) obtained from Sciadotema eichleriam [52] and Caryomene olivascens [37-38]. The chemistry of simple isoquinolines [65], isoquinolones [66], and benzyltetrahydroisoquinolines [67] have been reviewed. 

The range of simple isoquinoline alkaloids, principally obtained from cacti, has recently been greatly expanded by the isolation of isoquinolines, 3,4-dihydroisoquinolines and 1,2,3,4-tetrahydroisoquinolines bearing one, two, three and... 

Salsola alkaloids a group of simple isoquinoline alkaloids, occurring in Isola spp. Chief representative is salsoline (l-methyl- hydroxy-7-methoxy-1,23,4-tetrahydroisoquinoline), which occurs in the D-form, m.p. 215-216°C, [a]p + 40° (water) and in the DL-form. 

New natural sources of simple isoquinoline alkaloids are the Euphor-biaceae and the Rhamnaceae. Some recently isolated alkaloids of interest are shown in Scheme 1.1. ... 

Fig. 2. Formulas of simple isoquinoline alkaloids. (Self-explanatory names as N-methyl and 0-methyl derivatives and N-oxides are not included)...

The Occurrence of Simple Isoquinolines in Plants 2.3 Fabaceae Species... 

---