Examination of structurally selective derivatization of vitamin D(3) analogues by electrospray mass spectrometry.
Examination of structurally selective derivatization of vitamin D(3) analogues by electrospray mass spectrometry.
复制标题
通过电喷雾质谱法检查维生素 D(3) 类似物的结构选择性衍生化。
DOI:
10.1002/jms.105
复制
发表时间:
2001
期刊:
影响因子:
--
通讯作者:
G. Posner
中科院分区:
文献类型:
--
作者:
A. Weiskopf;P. Vouros;J. Cunniff;E. Binderup;F. Björkling;L. Binderup;M. White;G. Posner
The structural specificity of vitamin D derivatization by PTAD (4-phenyl-1,2,4-triazoline-3,5-dione) was probed using synthetic analogues and ion trap mass spectrometry. EB 1089, a vitamin D(3) analogue which contains a second site for Diels--Alder cycloaddition on its side-chain, allowed the examination of derivatization modes and comparisons of ion fragment structures. The origins of a PTAD-vitamin D(3) ion fragment, commonly used in metabolite characterization and quantitation of vitamin D(3) analogues (m/z 314), were established; ion trap mass spectrometry revealed that the PTAD comprises a portion of this diagnostic fragment, and is not lost by a retro-Diels--Alder step. Furthermore, the unique structure of the EB 1089 side-chain also permits facile determination of its side-chain metabolism. Use of PTAD derivatization and detection of metabolite-specific ion fragments identify hydroxylation at the end of the EB 1089 sidechain. It is believed that the results from these studies provide a clearer understanding of the mass spectrometry of triazolinedione derivatives, not only in the specific case of EB 1089, but also in their application to other vitamin D compounds.
登录
查看更多内容
影响因子:
20.3
作者:
R. Bouillon;W. Okamura;A. Norman
通讯作者:
R. Bouillon;W. Okamura;A. Norman
DOI:
10.1016/0021-9673(93)80625-i
发表时间:
1993-08-13
期刊:
JOURNAL OF CHROMATOGRAPHY
影响因子:
--
作者:
YEUNG, B;VOUROS, P;REDDY, GS
通讯作者:
REDDY, GS
影响因子:
--
作者:
Ross,TK;Darwish,HM;DeLuca,HF
通讯作者:
DeLuca,HF
影响因子:
4.8
作者:
Skowronski,RJ;Peehl,DM;Feldman,D
通讯作者:
Feldman,D