Stellatolide H (1) was isolated from a deep-sea sponge Discodermia sp. as the cytotoxic constituent. The planar structure of 1 was elucidated on the basis of the NMR spectroscopic and mass spectrometric data. The absolute configurations of the constituent amino acid residues were determined by the Marfey’s method. Stellatolide H (1) is a peptide lactone of the callipeltin class with its N-terminus blocked by 3-hydroxy-6,8-dimethyldeca-(4Z,6E)-dienoic acid (Hdda).

中文翻译：

---

Stellatolide H，一种来自深海海绵Discodermia sp。的细胞毒性肽内酯。

从深海海绵Discodermia sp。分离出Stellatolide H（1）。作为细胞毒性成分。根据NMR光谱和质谱数据阐明了1的平面结构。组成氨基酸残基的绝对构型通过Marfey方法确定。Stellatolide H（1）是Callipeltin类的肽内酯，其N端被3-羟基-6,8-二甲基癸基-（4 Z，6 E）-二烯酸（Hdda）封闭。