کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
2027631 | 1542700 | 2016 | 8 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Catalytic cyclometallation in steroid chemistry IV: Efficient method for the synthesis of tetrahydrothiophene, tetrahydroselenophen and cyclopentanone derivatives of (5α)-cholestane
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کلمات کلیدی
موضوعات مرتبط
علوم زیستی و بیوفناوری
بیوشیمی، ژنتیک و زیست شناسی مولکولی
زیست شیمی
پیش نمایش صفحه اول مقاله
![عکس صفحه اول مقاله: Catalytic cyclometallation in steroid chemistry IV: Efficient method for the synthesis of tetrahydrothiophene, tetrahydroselenophen and cyclopentanone derivatives of (5α)-cholestane Catalytic cyclometallation in steroid chemistry IV: Efficient method for the synthesis of tetrahydrothiophene, tetrahydroselenophen and cyclopentanone derivatives of (5α)-cholestane](/preview/png/2027631.png)
چکیده انگلیسی
• For the first time catalytic cycloalumination of (3β,5α)-3-vinylcholestane and (3α,5α)-3-allylcholestane were accomplished.
• Efficient syntheses of novel steroidal cyclic organoaluminum compounds.
• A convenient one-pot method for cyclopentanone and S,Se-heterocycle moiety formation on steroid.
• The structures of all novel compounds were confirmed by NMR measurements.
Catalytic cycloalumination of (3β,5α)-3-vinylcholestane and (3α,5α)-3-allylcholestane with Et3Al catalyzed by Cp2ZrCl2 was performed for the first time to give previously unknown aluminacyclopentanes in ∼90% yield; these products were converted in situ to carbo- and heterocyclic (5α)-cholestane derivatives.
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ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Steroids - Volume 108, April 2016, Pages 77–84
Journal: Steroids - Volume 108, April 2016, Pages 77–84
نویسندگان
Vladimir A. D’yakonov, Regina A. Tuktarova, Ilgiz I. Islamov, Leonard M. Khalilov, Usein M. Dzhemilev,