Amphiceramide A and B, Novel Glycosphingolipids from the Marine Sponge<i>Amphimedon compressa</i>
作者:Valeria Costantino、Ernesto Fattorusso、Concetta Imperatore、Alfonso Mangoni、Roberta Teta
DOI:10.1002/ejoc.200801230
日期:2009.5
sponge Amphimedon compressa has shown it to contain two novel glycosphingolipids, amphiceramide A (1a) and B (2a), which possess an unusual Δ6-phytosphingosine. The saccharide chain of amphiceramide A is composed of a β-glucose residue glycosylated at the 6-position by an N-acetyl-β-glucosamine and has never been found before in a natural product. The saccharide chain of amphiceramide B consists of an
加勒比海绵 Amphimedon compressa 的糖脂分析表明,它含有两种新型鞘糖脂,两性神经酰胺 A (1a) 和 B (2a),它们具有不寻常的 Δ6-植物鞘氨醇。两性神经酰胺 A 的糖链由 6 位被 N-乙酰基-β-葡糖胺糖基化的 β-葡萄糖残基组成,以前从未在天然产物中发现过。两性神经酰胺 B 的糖链由异乳糖 [Gal(1β6)Glc] 残基 β-连接到神经酰胺组成,这是首次在天然糖鞘脂中发现。此外,海绵含有一种新的分子种类,乙酰氨基葡萄糖神经酰胺 (3a),以及已知的葡萄糖神经酰胺 4a (halicerebroside A) 和蜜二糖神经酰胺 5a (amphimelibioside C)。(© Wiley-VCH Verlag GmbH & Co. KGaA, 69451 Weinheim, Germany, 2009)