乙酸酐 、 Chelonin A 在
吡啶 作用下,
反应 17.0h,
以73%的产率得到Chelonin A acetamide
参考文献:
名称:
Aromatic alkaloids from the marine sponge Chelonaplysilla sp
摘要:
Four novel alkaloids derived from tryptophan and tyrosine subunits have been isolated from the marine sponge Chelonaplysilla sp. collected from a marine lake in Palau. The structures of chelonin A (3), chelonin B (4), bromochelonin B (5), and chelonin C (6) were determined by interpretation of spectral data and chemical conversions. Chelonin A (3) and C (6) are the first natural products incorporating a 2,6-disubstituted morpholine ring. Chelonin A (3), chelonin B (4), and bromochelonin B (5) exhibited antimicrobial activity against Bacillus subtilis, while chelonin A (3) showed in vivo antiinflammatory activity.