首页> 外文期刊>Journal of chemical crystallography >Absolute structure of (11E, 1S, 3S, 4R, 7S, 8R, 14S)-3,7-diiodo-4,8-epoxy-euniolide
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Absolute structure of (11E, 1S, 3S, 4R, 7S, 8R, 14S)-3,7-diiodo-4,8-epoxy-euniolide

机译:(11E,1S,3S,4R,7S,8R,14S)-3,7-二碘-4,8-​​环氧-乙二胺的绝对结构

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摘要

3,7-Diiodo-4,8-epoxy-euniolide (2) was synthesized from euniolide (1) by the addition reaction of iodine in the presence of triphenylphosphine in CH2Cl2. The absolute structure of 2 was unambiguously determined by a combination of H-1 and C-13 NMR, HREI mass spectroscopy, and x-ray single crystal analysis as (11E, 1S, 3S, 4R, 7S, 8R, 14S)-3,7-diiodo-4,8-epoxy-cembra-11, 15-dien-16,14-olide. X-ray crystallographic data for 2: Orthorhombic P2(1)2(1)2(1) (#19),a = 10.9688(7), b = 11.3909(8), c = 16.885(1)Angstrom, rho(calcd) = 1.795 g cm(-3), and for Z = 4. [References: 9]
机译:在三苯基膦的存在下,在二氯甲烷中,通过碘的加成反应,由碘化物(1)合成3,7-二碘-4,8-​​环氧-环氧乙烷(2)。通过H-1和C-13 NMR,HREI质谱和X射线单晶分析(11E,1S,3S,4R,7S,8R,14S)-3的组合明确确定2的绝对结构,7-二碘-4,8-环氧-cembra-11,15-dien-16,14-内酰胺。 2:正交P2(1)2(1)2(1)(#19)的X射线晶体学数据,a = 10.9688(7),b = 11.3909(8),c = 16.885(1)埃,rho(计算得出)= 1.795 g cm(-3),对于Z =4。[参考:9]

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