Kamerling J P, Vliegenthart J F
Carbohydr Res. 1975 May;41:7-17. doi: 10.1016/s0008-6215(00)87002-0.
A number of O-acetylated N-acylneuraminic acids, isolated from submandibular glands of cow and horse and from horse erythrocytes, have been characterized by mass spectrometry. On the basis of the typical fragmentation patterns of the pertrimethylsilyl derivatives of the methyl esters of the compounds, they were identified as 4-O-acetyl-, 9-O-acetyl-, 4,9-di-O-acetyl-, and 7,9-di-O-acetyl N-acetylneuraminic acid, and 4-O-acetyl-and 9-O-acetyl-N-glycolylneuraminic acid.
从牛和马的下颌下腺以及马的红细胞中分离出的多种O-乙酰化N-酰基神经氨酸，已通过质谱进行了表征。根据这些化合物甲酯的三甲基硅烷基衍生物的典型裂解模式，它们被鉴定为4-O-乙酰基-N-乙酰神经氨酸、9-O-乙酰基-N-乙酰神经氨酸、4,9-二-O-乙酰基-N-乙酰神经氨酸、7,9-二-O-乙酰基-N-乙酰神经氨酸、4-O-乙酰基-N-糖基神经氨酸和9-O-乙酰基-N-糖基神经氨酸。
