After that, a stereoselective synthesis of (-)-(4E,7S)-7-methoxydodec-4-enoic acid which is the acid portion of malyngamides U and V was accomplished in eight steps from hexanal in 24% overall yield. The key steps involved the catalytic asymmetric allylation of hexanal and the coupling reaction of a chiral alkyne and a protected bromide in the presence of t-BuLi.
其次,对malyngamides U,V的手性长链脂肪酸部分(-)-(4E,7S)-7-甲氧基-4-十二烯酸进行了合成,以正己醛的不对称烯丙基化反应和在t-BuLi存在下的手性末端炔和保护的3-溴-1-醇进行的S_N2偶联反应为关键步骤,通过8步反应以24%的总产率完成了其合成。
参考来源 - 海洋天然产物malyngamides U,V及共轭多烯酰胺生物碱的合成·2,447,543篇论文数据,部分数据来源于NoteExpress
Quantitative measurement of hexanal by headspace analysis is a common technique.
通过液面上部气体分析进行己醛的定量测量是一个常用技术。
The catalyst was used for hexanol conversion, which produced hexanal and hexene depending on the.
考察了催化剂催化正己醇转化的性能,正己醇氧化生成正己醛和脱水生成正己烯两种产物。
This study showed nonanal and hexanal might be a better peroxide index for shelf life of roasted almonds kernels.
壬醛和己醛的组分含量可以作为油脂氧化程度及确定烘烤美国大杏仁货架期的检测指标。
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