M+4 stable isotope labeling of levovirin and M+7 and carbon-14 labeling of levovirin valinate pro-drug
作者:Steve A. de Keczer、Mohammad R. Masjedizadeh、Shao-Yong Wu、Teresa Lara-Jaime、Kate Comstock、Charles Dvorak、Yu-Ying Liu、Walter Berger
DOI:10.1002/jlcr.1138
日期:2006.12
[M+4]-labeled levovirin 5 (231 mg) was synthesized as an MS reference compound from [M+4] triazole ester 2. [M+7]-labeled levovirin valinate 6 (127 mg) was synthesized as a comparison MS reference compound from [M+6] triazole ester 3. [14C]-Levovirin 7 and [14C]-levovirin valinate 8 were synthesized to support metabolism studies. The synthesis of 7 was accomplished in 33% overall yield (35.4 mCi, 57 mCi/mmol) from Ba14CO3 and 8 was synthesized in 41% yield (12.5 mCi, 57 mCi/mmol) from 7. An efficient metallation/carbonation reaction was developed to synthesize [14C]-triazole ester 4. Copyright © 2006 John Wiley & Sons, Ltd.
[M+4]标记的levovirin 5(231毫克)作为质谱参考化合物由[M+4]噻唑酯2合成而成。[M+7]标记的levovirin valinate 6(127毫克)作为比较质谱参考化合物由[M+6]噻唑酯3合成。合成[14C] levovirin 7和[14C] levovirin valinate 8是为了支持代谢研究。7的合成总体产率为33%(35.4 mCi,57 mCi/mmol),由Ba14CO3合成,而8的合成产率为41%(12.5 mCi,57 mCi/mmol),由7合成。开发了一种高效的金属化/碳化反应以合成[14C]噻唑酯4。版权所有 © 2006 John Wiley & Sons, Ltd.