Synthesis of didemnolines A-D, N9-substituted β-carboline alkaloids from the marine ascidian Didemnum sp.
作者:Robert W Schumacher、Bradley S Davidson
DOI:10.1016/s0040-4020(98)01100-4
日期:1999.1
Didemnolines A-D (1–4) were synthesized and their structures were confirmed through comparisons of data for the synthetic material with those obtained for natural 1–4. The synthesis of didemnolines A (1) and C (3) involved the coupling of 1-[(benzyloxy)methyl]-4-chloromethyl-5-(thiomethyl)imidazole (6) with 7-bromo-β-carboline (5), while didemnolines B (2) and D (4) were formed through the analogous