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化学学报
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化学学报 ›› 1987, Vol. 45 ›› Issue (9): 853-859. 上一篇    下一篇

研究论文

N-二异丙基磷酰基氨基酸的电子电离和快原子轰击质谱的比较

柴文刚;卞则梁;徐梦山;赵玉芬;吉改姣   

  1. 中国科学院化学研究所
  • 发布日期:1987-09-15

A comparison of fast atom bombardment and electron ionization mass spectra of diisopropylphosphoryl protected amino acids

CHAI WENGANG;BIAN ZELIANG;XU MENGSHAN;ZHAO YUFEN;JI GAIJIAO   

  • Published:1987-09-15

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556

被引次数

3

N-二异丙基磷酰基(DIPP)氨基酸的快原子轰击(FAB)和电子电离(EI)质谱都有相似的丢失两分子丙烯和一分子甲酸的碎裂过程.在FAB中,连续失掉两个丙烯,然后脱去甲酸的过程较为有利;在EI中则主要为先脱去甲酸,随后失去丙烯,本文对DIPP-氨基酸的FAB和EI质谱碎裂历程进行了比较,对分子离子峰的形式与碎裂方式的关系进行了讨论.

关键词: 氨基酸, 质谱法, 脯氨酸, 电离, 丙氨酸, 甘氨酸, 氨基膦酸 P, 电子轰击, 磷酸化合物

The fast atom bombardment (FAB) and electron ionization (EI) mass spectra of diisopropylphosphoryl (DIPP) protected amino acids showed similar fragmentation pathways, in which elimination of neutral mols. is the major reaction. Successive losses of two CH3CH:CH2 and then HCO2H are preferred in FAB spectra, while in EI mode decarboxylation is more favorable. Most of the fragment ions observed in FAB and EI spectra contain phosphorylamide structure and prominent indole-contg. fragments were also found in FAB spectrum in DIPP-Try.

Key words: AMINO ACID, MASS SPECTROGRAPHY, PROLINE, IONIZATION, ALANINE, GLYCINE, PHOSPHOAMIDIC ACID P, ELECTRON BOMBARDMENT, PHOSPHORYL COMPOUNDS

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