共查询到20条相似文献,搜索用时 15 毫秒
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A total synthesis of the 5-ylidenepyrrole-2-one pukeleimide A (3), a constituent of the marine blue-green alga , is described. 相似文献
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Sigrid HauffAnton Rieker 《Tetrahedron letters》1972,13(15):1451-1452
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《Tetrahedron letters》1987,28(47):5887-5888
The dehydroxymethyl analog of bulgecin A was synthesized in order to establish a synthetic route of bulgecin A. 相似文献
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一种结构新颖的螺锗化合物的合成 总被引:1,自引:0,他引:1
在吡啶存在下,本文利用手性配体试剂L-N,N-双(2-羟乙基)苏氨酸(1)与β-羧基乙基锗倍半氧化物(2)反应,首次得到一种具有旋光性、含δ-内酯环新颖结构的螺锗化合物(3)。^1H NMR ,IR和MS的测定数据均表明NGe配键是存在的。 相似文献
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Takashi Sasaki 《Tetrahedron letters》2007,48(33):5821-5824
The synthesis of a nanocar with a built-in strong net dipole is disclosed. The synthesis was executed to explore a more effective handle on electric-field-induced rolling of nanocars. 相似文献
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Kevin A. Memoli 《Journal of heterocyclic chemistry》2007,44(4):927-928
A novel pyrrolopyridodiazepine ring system was synthesized from methyl 2‐methyl nicotinate. 相似文献
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A highly convergent entry to chiral heteroaromatic prostacyclin analogues is outlined. 相似文献
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Acidic cyclization of 3′, 3″′-linked 2′, 2″′-dihydroxy-4, 4′, 4″, 4″′, 6′, 6″′-hexamethoxybichalcone (I) with alcoholic phosphoric acid gave a new naringenyl-chalcon hexamethyl ether (II) along with hexa-O-methyl-8,8″-binaringenin. 相似文献
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2-[(5-Methyl-1,3,4-oxadiazol-2-yl)methyl]benzenamine ( 15 ) was prepared in four steps from o-nitrophenyl-acetic acid, and treated with triethyl orthoformate in an attempt to prepare an oxadiazolobenzodiazepine. However, the resulting product was 13-(5-methyl-1,3,4-oxadiazol-2-yl)-5H-indolo[2,1-b][1,3]benzodiazepine monohydrate ( 16 ). Indolobenzodiazepine 16 is the first reported member of a novel ring system. Interesting features of the synthesis of 16 are discussed, including the mechanism of formation from 15. 相似文献