从两种加勒比海绵的磷脂中提取的两种新型天然α-甲氧基酸。
Two novel naturally occurring alpha-methoxy acids from the phospholipids of two Caribbean sponges.
作者信息
Carballeira N M, Sepúlveda J A
机构信息
Department of Chemistry, University of Puerto Rico, Rio Piedras 00931.
出版信息
Lipids. 1992 Jan;27(1):72-4. doi: 10.1007/BF02537064.
The novel (5Z)-2-methoxy-5-hexadecenoic acid (1) was identified in the phospholipids of the sponge Tethya crypta while the also novel acid (6Z)-2-methoxy-6-hexadecenoic acid (2) was found in the phospholipids of the Caribbean sponge Spheciospongia cuspidifera. The methoxy-fatty acids were mainly associated with phosphatidylethanolamine. The double bond positions were determined by gas chromatography/mass spectrometry on the corresponding dimethyl-disulfide adducts and the double bond stereochemistry was ascertained by gas chromatography/Fourier transform infrared spectroscopy. The fatty acid composition of the two sponges is reported.
在海绵隐硫海绵（Tethya crypta）的磷脂中鉴定出了新型的(5Z)-2-甲氧基-5-十六碳烯酸（1），而在加勒比海绵尖瓣海绵（Spheciospongia cuspidifera）的磷脂中发现了同样新型的酸(6Z)-2-甲氧基-6-十六碳烯酸（2）。甲氧基脂肪酸主要与磷脂酰乙醇胺相关。通过气相色谱/质谱法对相应的二甲基二硫化物加合物测定双键位置，并通过气相色谱/傅里叶变换红外光谱法确定双键立体化学。报道了这两种海绵的脂肪酸组成。
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