Preparation of labelled 2-methoxy-3-alkylpyrazines: synthesis and characterization of deuterated 2-methoxy-3-isopropylyrazine and 2-methoxy-3-isobutylpyrazine
作者:David A. Gerritsma、Ian D. Brindle、Timothy R.B. Jones、Alfredo Capretta
DOI:10.1002/jlcr.664
日期:2003.3.15
Efficient synthetic routes for a number of deuterated analogues of 2-methoxy-3-isopropylpyrazines and 2-methoxy-3-isobutylpyrazines have been developed involving the condensation of glyoxal with an α-amino acid amide followed by methylation with iodomethane. In this way [2H3]2-methoxy-3-isopropylpyrazine, 2-methoxy-3-isopropyl-[2H2]pyrazine, [2H3]2-methoxy-3-isopropyl-[2H2]pyrazine, [2H3]2-methoxy-3-isobutylpyrazine; 2-methoxy-3-isobutyl-[2H2]pyrazine and [2H3]2-methoxy-3-isobutyl-[2H2]pyrazine were prepared and characterized by NMR and MS. Copyright © 2002 John Wiley & Sons, Ltd.
现已开发出一些 2-甲氧基-3-异丙基吡嗪和 2-甲氧基-3-异丁基吡嗪氘代类似物的高效合成路线,包括乙二醛与α-氨基酸酰胺缩合,然后用碘甲烷进行甲基化。通过这种方法,[2H3]2-甲氧基-3-异丙基吡嗪、2-甲氧基-3-异丙基-[2H2]吡嗪、[2H3]2-甲氧基-3-异丙基-[2H2]吡嗪、[2H3]2-甲氧基-3-异丁基吡嗪;制备了[2H3]2-甲氧基-3-异丁基-[2H2]吡嗪和[2H3]2-甲氧基-3-异丁基-[2H2]吡嗪,并对其进行了核磁共振和质谱表征。Copyright © 2002 John Wiley & Sons, Ltd. All Rights Reserved.