کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
5269615 | 1385393 | 2014 | 5 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Vincamajorines A and B, monoterpenoid indole alkaloids with new carbon skeletons from Vinca major
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کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
شیمی
شیمی آلی
پیش نمایش صفحه اول مقاله
چکیده انگلیسی
Two new monoterpenoid indole alkaloids, vincamajorines A (1) and B (2), were isolated from Vinca major. Their structures were elucidated by means of 1D and 2D NMR, and HREIMS spectroscopic data. The relative and absolute configurations were deduced by comparing the experimental 13C NMR, ECD spectra, and OR data with those theoretically calculated. Vincamajorine A (1) represents a new C20 carbon skeleton arranged compactly in seven rings, and vincamajorine B (2) is an alkaloid with an unprecedented 6/5/7/5/6 pentacyclic ring system. A possible biosynthetic pathway was also proposed for the formation of 1 and 2.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Tetrahedron Letters - Volume 55, Issue 47, 19 November 2014, Pages 6490-6494
Journal: Tetrahedron Letters - Volume 55, Issue 47, 19 November 2014, Pages 6490-6494
نویسندگان
Zhi-Jun Zhang, Jing Yang, Juan He, Xing-De Wu, Li-Dong Shao, Yan Li, Sheng-Xiong Huang, Rong-Tao Li, Qin-Shi Zhao,