کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
5277080 | 1385572 | 2007 | 4 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Canataxpropellane, a novel taxane with a unique polycyclic carbon skeleton (tricyclotaxane) from the needles of Taxus canadensis
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موضوعات مرتبط
مهندسی و علوم پایه
شیمی
شیمی آلی
پیش نمایش صفحه اول مقاله
چکیده انگلیسی
A novel taxane with an unprecedented 5/5/4/6/6/6-membered hexacyclic skeleton containing [3.3.2]propellane was isolated from the needles of the Canadian yew, Taxus canadensis. The structure was established as 2α,10β-diacetoxy-5α,9α,20α-trihydroxy-3α,11α;4α,12α;14α,20-tricyclotaxan-13-one (1), which exists as two conformational isomers on the basis of spectroscopic analysis. This compound would be biogenetically derived from a normal 6/8/6-taxane by the intramolecular aldol reaction and [2+2] cycloaddition.
The tricyclotaxane is the first example of a 5/5/4/6/6/6-membered ring carbon skeleton containing a unique [3.3.2]propellane.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Tetrahedron Letters - Volume 48, Issue 15, 9 April 2007, Pages 2721-2724
Journal: Tetrahedron Letters - Volume 48, Issue 15, 9 April 2007, Pages 2721-2724
نویسندگان
Chang-Hong Huo, Xiao-Hui Su, Yu-Fang Wang, Xi-Ping Zhang, Qing-Wen Shi, Hiromasa Kiyota,