Reagent-controlled regiodivergent ring expansions of steroids.
Reagent-controlled regiodivergent ring expansions of steroids.
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DOI:
10.1038/s41467-018-03248-2
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发表时间:
2018-03-05
影响因子:
16.6
通讯作者:
Aubé J
中科院分区:
文献类型:
--
作者:
Charaschanya M;Aubé J
Ring expansion provides a powerful way of introducing a heteroatom substituent into a carbocyclic framework. However, such reactions are often limited by the tendency of a given substrate to afford only one of the two rearrangement products or fail to achieve high selectivity at all. These limitations are particularly acute when seeking to carry out late-stage functionalization of natural products as starting points in drug discovery. In this work, we present a stereoelectronically controlled ring expansion sequence towards selective and flexible access to complementary ring systems derived from common steroidal substrates. Chemical diversification of the reaction intermediate affords over 100 isomerically pure analogs with spatial and functional diversity. This regiodivergent rearrangement, and the concept of using chiral reagents to affect regiocontrol in chiral natural products, should be broadly applicable to late-stage natural product diversification programs. Late-stage diversification of natural products is an important starting point for drug discovery. Here, the authors use chiral reagents to perform the regiocontrolled ring expansion of steroid precursors and achieve more than 100 isomerically pure analogs with spatial and functional diversity.
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DOI:
10.1002/chem.201704169
发表时间:
2017-10-26
期刊:
Chemistry (Weinheim an der Bergstrasse, Germany)
影响因子:
--
作者:
Foley DJ;Craven PGE;Collins PM;Doveston RG;Aimon A;Talon R;Churcher I;von Delft F;Marsden SP;Nelson A
通讯作者:
Nelson A
影响因子:
3.6
作者:
AUBE, J;HAMMOND, M;TAKUSAGAWA, F
通讯作者:
TAKUSAGAWA, F
影响因子:
16.6
作者:
HUNIG, S
通讯作者:
HUNIG, S
影响因子:
--
作者:
Maltais, R;Tremblay, MR;Poirier, D
通讯作者:
Poirier, D
影响因子:
--
作者:
Fenster, Erik;Rayabarapu, Dinesh K.;Aube, Jeffrey
通讯作者:
Aube, Jeffrey