Diastereoselective Synthesis of α-Aryl-Substituted LnDOTA Chelates from Achiral Starting Materials by Deracemization Under Mild Conditions.
Diastereoselective Synthesis of α-Aryl-Substituted LnDOTA Chelates from Achiral Starting Materials by Deracemization Under Mild Conditions.
复制标题
在温和条件下通过去消旋化从非手性起始材料非对映选择性合成 α-芳基取代的 LnDOTA 螯合物。
DOI:
10.1002/chem.202301887
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发表时间:
2023
期刊:
影响因子:
--
通讯作者:
Woods,Mark
中科院分区:
文献类型:
--
作者:
Maier,KarleyB;Rust,LaurenN;Kupara,CharleneI;Woods,Mark
Substituted derivatives of the DOTA framework are of general interest to alter chelate properties and facilitate the conjugation of chelates to other molecular structures. However, the scope of substituents that can be introduced into the α‐position has traditionally been limited by the availability of a suitable enantiopure starting materials to facilitate a stereoselective synthesis. Tetra‐substituted DOTA derivatives with phenyl and benzoate substituents in the α‐position have been prepared. Initial syntheses used enantiopure starting materials but did not afford enantiopure products. This indicates that the integrity of the stereocenters was not preserved during synthesis, despite the homo‐chiral diastereoisomer being the major reaction product. The homochiral diastereoisomer could be produced as the major or sole reaction product when starting from racemic or even achiral materials. Deracemization was found to occur during chelation through the formation of an enolate stabilized by the aryl substituent. This general ability of aryl groups to enable deracemization greatly increases the range of substituents that can be introduced into DOTA‐type ligands with diastereochemical selectivity.
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DOI:
10.1016/0360-3016(80)90258-8
发表时间:
1980
期刊:
International journal of radiation oncology, biology, physics
影响因子:
--
作者:
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DOI:
10.1016/0360-3016(79)91221-5
发表时间:
1979
影响因子:
7
作者:
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影响因子:
6.2
作者:
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影响因子:
11.2
作者:
Dewhirst,MW;Sim,DA;Sapareto,S;Connor,WG
通讯作者:
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DOI:
10.3322/canjclin.26.5.274
发表时间:
1976
期刊:
CA: A Cancer Journal for Clinicians
影响因子:
--
作者:
Philip Rubin;S. Carter
通讯作者:
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