Short and atom economic enantioselective synthesis of the σ1 receptor ligands (S)- and (R)-fluspidine - important tools for PET studies.
Short and atom economic enantioselective synthesis of the σ1 receptor ligands (S)- and (R)-fluspidine - important tools for PET studies.
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σ1 受体配体 (S)- 和 (R)-fluspidine 的短时间和原子经济对映选择性合成 - PET 研究的重要工具。
DOI:
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发表时间:
2019
影响因子:
3.6
通讯作者:
B. Wünsch
中科院分区:
文献类型:
--
作者:
Paul Bunse;Christoph Schlepphorst;F. Glorius;M. Kitamura;B. Wünsch
Aryl bromides 2a and 2b bearing an alkynyl substituent in o-position reacted with n-butyllithium and 1-benzylpiperidin-4-one in a one-pot Domino reaction to form ester 3 and aldehyde 5, respectively. Enantiomeric alcohols (R)-8 and (S)-8 were obtained by conjugate NaBH4 reduction of α,β-unsaturated ester 3 in the presence of chiral Co-complexes (R,R)-10 and (S,S)-10. Starting from orthoester 2a, the precursors (R)-8 and (S)-8 for the synthesis of fluspidine enantiomers (R)-1/[18F](R)-1 and (S)-1/[18F](S)-1 were obtained in only two reaction steps without additional steps for N-protection in an atom-economic manner in 95.6 % ee and 97.2 % ee, respectively.
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影响因子:
13.5
作者:
Maurice T;Su TP
通讯作者:
Su TP
影响因子:
2.8
作者:
Bunse P;Würthwein EU;Wünsch B
通讯作者:
Wünsch B
影响因子:
9.3
作者:
Brust, Peter;Deuther-Conrad, Winnie;Sabri, Osama
通讯作者:
Sabri, Osama
影响因子:
3.4
作者:
Wiese C;Große Maestrup E;Galla F;Schepmann D;Hiller A;Fischer S;Ludwig FA;Deuther-Conrad W;Donat CK;Brust P;Büter L;Karst U;Wünsch B
通讯作者:
Wünsch B
影响因子:
5.2
作者:
Chen D;Chemler SR
通讯作者:
Chemler SR