کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
1377451 981979 2006 4 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Stereoselective synthesis of dinucleoside boranophosphates by an oxazaphospholidine method
موضوعات مرتبط
مهندسی و علوم پایه شیمی شیمی آلی
پیش نمایش صفحه اول مقاله
Stereoselective synthesis of dinucleoside boranophosphates by an oxazaphospholidine method
چکیده انگلیسی

A stereoselective synthesis of dinucleoside boranophosphates by using nucleoside 3′-oxazaphospholidine derivatives is described. The diastereoselectivity of the internucleotidic bond formation reactions varied with the nucleobase used. (Rp)- and (Sp)-dithymidine boranophosphates were synthesized with excellent diastereoselectivity both in solution and on a solid-support, whereas a loss of diastereopurity was observed for the 2′-deoxycytidine derivative having an unprotected nucleobase amino group. On the other hand, complete chemoselectivity of the 3′-oxazaphospholidine derivatives toward hydroxy groups over amino groups was serendipitously found during the study. This unique chemoselectivity of the 3′-oxazaphospholidine derivatives was investigated by comparing them with the conventional nucleoside 3′-phosphoramidite.

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ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Bioorganic & Medicinal Chemistry Letters - Volume 16, Issue 12, 15 June 2006, Pages 3111–3114
نویسندگان
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