Some Chemistry of Heteratisine

Abstract

not available

13C-nmr Assignments for Lactone-Type Norditerpenoid Alkaloids

“…13C-nmr chemical shift assignments for 6-benzoylheteratisine [2] were also reported (12). 13C-nmr chemical shift assignments for the lactone-type norditerpenoid alkaloids heterophyllidine [4], heterophylline [5]• and heterophyllisine [6] are being reported for the first time in this work.…”

“…The unambiguous 13C-nmr and complete 'H-nmr chemical shift assignments for heterophyllidine [4], heterophylline [53, and heterophyllisine [6] are presented for the hrst time in Tables 2 and 3, respectively. These assignments are based on the results of ID, 2D, DEPT, and selective INEPT nmr experiments on compounds 4-6.…”

“…Samples.-The samples of heteratisine [1], 6-acetylheteratisine [3], heterophyllidine [4], heterophylline [5], and heterophyllisine [6] used for this study were authentic and were of 30-40 mg (1 and 3) and [2][3] Bax (18). A long range coupling value ('J) for the selective INEPT experiments was 6 Hz.…”