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Picoloyl protecting group in synthesis: focus on a highly chemoselective catalytic removal.
Organic & Biomolecular Chemistry ( IF 2.9 ) Pub Date : 2020-06-10 , DOI: 10.1039/d0ob00803f
Scott A Geringer 1 , Michael P Mannino 1 , Mithila D Bandara 1 , Alexei V Demchenko 1
Affiliation  

The picoloyl ester (Pico) has proven to be a versatile protecting group in carbohydrate chemistry. It can be used for the purpose of stereocontrolling glycosylations via an H-bond-mediated Aglycone Delivery (HAD) method. It can also be used as a temporary protecting group that can be efficiently introduced and chemoselectively cleaved in the presence of practically all other common protecting groups used in synthesis. Herein, we will describe a new method for rapid, catalytic, and highly chemoselective removal of the picoloyl group using inexpensive copper(II) or iron(III) salts.

中文翻译:

合成中的吡啶甲酰基保护基:专注于高度化学选择性催化去除。

吡啶甲酸酯(Pico)已被证明是碳水化合物化学中的通用保护基。它可以用于通过H键介导的糖苷配基传递(HAD)方法立体控制糖基化的目的。它也可以用作临时保护基团,在合成中使用的所有其他常用保护基团的存在下,可以有效地引入和化学选择性地裂解。在本文中,我们将描述一种使用廉价的铜(II)或铁(III)盐快速,催化和高度化学选择性去除甲基吡啶基的新方法。
更新日期:2020-07-01
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