Efficient Synthesis of N-[4-(4-Chlorophenyl)butyl]-S-(3-piperidinopropyl)isothiourea (OUP-186) and Its Analogues Using 2-Nitrophenylacetyl Isothiocyanate: Application to Novel Histamine H3R Antagonists

被引:4
作者
Yoneyama, Hiroki [1 ]
Magata, Takuji [1 ]
Uemura, Kenji [1 ]
Usami, Yoshihide [1 ]
Tanaka, Satoshi [1 ]
Takaoka, Masanori [1 ]
Harusawa, Shinya [1 ]
机构
[1] Osaka Univ Pharmaceut Sci, Takatsuki, Osaka 5691094, Japan
来源
SYNTHESIS-STUTTGART | 2015年 / 47卷 / 09期
关键词
S-alkyl-N-alkylisothiourea; histamine H-3 receptor; non-imidazole; H-3; antagonist; cancer growth inhibition; H-3 RECEPTOR ANTAGONISTS; THERAPEUTIC TARGETS; MOLECULAR-CLONING; ISOTHIOUREAS; DERIVATIVES; THIOUREA; RELEASE; LIGANDS;
D O I
10.1055/s-0034-1380345
中图分类号
O62 [有机化学];
学科分类号
070303 ; 081704 ;
摘要
A potent histamine H-3 receptor antagonist OUP-186 with an S-alkyl-N-alkylisothiourea structure was synthesized using 3-phenylpropanoyl isothiocyanate (PPI) as an SCN source. The synthetic route was significantly improved by replacing 3-phenylpropanoyl isothiocyanate with 2-nitrophenylacetyl isothiocyanate (NPAI), giving a 74% overall yield in three steps from 4-(4-chlorophenyl) butylamine. In addition, the 2-nitrophenylacetyl isothiocyanate method successfully yielded two fluorine-containing analogues, and a shorter, C-2 homologue of OUP-186.
引用
收藏
页码:1291 / 1302
页数:12
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