Ginkgolide B, a constituent of the tree Ginkgo biloba, was radiolabeled with the beta-emitter tritium ([H-3]) in two steps from ginkgolide C. First, a triflate precursor was prepared utilizing the selective reactivity of 7-OH in ginkgolide C; the triflate was then reduced with sodium borotritide to yield tritiated ginkgolide B ([H-3]GB) in good yield and high specific activity. The tritiated ginkgolide will be an important tool for studying neuromodulatory properties of ginkgolides. (C) 2004 Elsevier Ltd. All rights reserved.
Suehiro, M.; Stromgaard, K.; Nakanishi, K., Journal of Labelled Compounds and Radiopharmaceuticals, 2003, vol. 46, p. S214 - S214
作者:Suehiro, M.、Stromgaard, K.、Nakanishi, K.、Simpson, N.、Heertum, R. van