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Herein, we report an efficient construction of the lactone bridge of strongylophorine-2, which is a meroditerpenoid isolated from Strongylophora durissima and an inhibitor for HIF-1 transcriptional pathway. Starting from dehydroepiandrosterone acetate, the characteristic lactone has been constructed in 5.4% over 18 steps by employing, (1) modified oxy radical-mediated C–H functionalization at the...
Simple and low-cost method for the measurement of inter-vehicle distance has been developed. Proposed method is based on geometric similarity between an object on the rear surface of a vehicle and its image on image sensor. Size of the object should be well-known or be informed using visible light communication. This time, a license plate was used as the object during the day, and a distance between...
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