共查询到18条相似文献,搜索用时 93 毫秒
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(2S,3R)┐谷象虫聚集信息素的合成黄锦霞*李焰马兴泉陈祖兴徐章煌(湖北大学化学系武汉430062)关键词(2S,3R)-谷象虫聚集信息素,合成,不对称顺式醇醛缩合反应,N-莰烷-磺内酰胺1997-07-14收稿,1997-09-29修回湖北省自然... 相似文献
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本文以樟脑衍生物(-)-莰烷磺内酰胺(2)为原料,经N-烷酰基莰烷-2,10-磺内酚胺(3)与碘代烷的不对称烷基化反应,用二锂代乙基苯基砜取代磺内酰胺助剂以及铝汞还原性脱硫反应等三步合成(S)和(R)一切叶蚁警戒信息素(1),其光学纯度高达95%e.e以上。 相似文献
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(3S,4R)-Bengamide E(2) was synthesized starting from D-glucono-δ-lactone(3) and the key deoxygenation step from 13 to 15 was achieved by the application of NaBH3CN and ZnI2.Compared with natural bengamide E(1),the synthetic compound(35,4R)-bengamide E(2) was inactive against the cell growth of HUVEC and cancer cells.These data represent the significance of the stereochemistry at C-3 and C-4 of bengamides for structural recognition and binding with the target(s). 相似文献
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G. Yu. Ismuratov M. P. Yakovleva A. V. Galyautdinova G. A. Tolstikov 《Chemistry of Natural Compounds》2003,39(1):31-33
Optically active (4R,8RS)-dimethyldecanal, an analog of the aggregation pheromone of the flour beetles Tribolium confusum and T. Castaneum, and (4R)-methylnonan-1-ol, the sex pheromone of the yellow mealworm Tenebrio molitor L., are synthesized using ozonolytic transformation of (6R,10)-dimethyl-9-undecen-2-one to (6R)-methyl-9-hydroxynonan-2-one in the key step. The starting compound is available as enantiomerically enriched (ee ~50%) (S)-(+)-3,7-dimethyl-1,6-octadiene. 相似文献
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Synthesis and Crystal Structure of 5(R)-(1R,2S,5R)-Menthoxy-4(R)- N-cyclohexylaminobutyrolactone 总被引:1,自引:0,他引:1
1INTRODUCTION Substitutedγ-butyrolactones are a group of impor-tant compounds containing unique carbon skeleton of butyrolactone which is widely present in many natural products and have received considerable interest because of their biological and medicinal properties[1~4].Therefore,much attention has been paid to the new asymmetric methods for synthesi-zing these interesting compounds[5~11].The prece-ding results led us to explore the possibility of using cyclohexylamine to convert5(… 相似文献
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