Synthesis and antimicrobial activity of some 2-alkyl-2H-1,4-benzothiazin-3(4H)-ones and 2-alkylbenzo[d]imidazolo[2,1-b]-thiazolidin-3-ones
摘要:
Sodium 2-aminothiophenoxide (1) reacts with ethyl 2-bromoalkanoates (2) under direct cyclization to form 2-alkyl-2H-1,4-benzothiazin-3(4H)-ones (3). Reaction of the sodium salt of 2-mercaptobenzimidazole (4) with 2 or 2-bromoalkanoic acids (5) affords only S-alkylated products (6 or 7, respectively). The cyclization products - 2-alkylbenzo[d] imidazolo[2,1-b]thiazolidin-3-ones (8)- can be obtained only from the corresponding 2-(2-benzimidazolylthio)alkanoic acids (7) by the action of acetic anhydride. Both compounds 3 and 8 exhibit only moderate antimicrobial activity against some gram-positive bacteria.
Synthesis and antimicrobial activity of some 2-alkyl-2H-1,4-benzothiazin-3(4H)-ones and 2-alkylbenzo[d]imidazolo[2,1-b]-thiazolidin-3-ones
摘要:
Sodium 2-aminothiophenoxide (1) reacts with ethyl 2-bromoalkanoates (2) under direct cyclization to form 2-alkyl-2H-1,4-benzothiazin-3(4H)-ones (3). Reaction of the sodium salt of 2-mercaptobenzimidazole (4) with 2 or 2-bromoalkanoic acids (5) affords only S-alkylated products (6 or 7, respectively). The cyclization products - 2-alkylbenzo[d] imidazolo[2,1-b]thiazolidin-3-ones (8)- can be obtained only from the corresponding 2-(2-benzimidazolylthio)alkanoic acids (7) by the action of acetic anhydride. Both compounds 3 and 8 exhibit only moderate antimicrobial activity against some gram-positive bacteria.
Heterocyclische Sulfide, Verfahren zu ihrer Herstellung und pharmazeutische Mittel, die diese Verbindungen enthalten
申请人:HOECHST AKTIENGESELLSCHAFT
公开号:EP0194572A1
公开(公告)日:1986-09-17
Heterocyclische Sulfide der allgemeinen Formel Heterocyclus-S-R, Verfahren zu ihrer Herstellung und insbesondere ihre Verwendung zur Immunstimulation, Immunrestauration und zytostatischen Behandlung, sowie pharmazeutische Mittel für diese Indikationen, die ein solches Sulfid enthalten.
Ogura,H. et al., Chemical and pharmaceutical bulletin, 1968, vol. 16, # 11, p. 2167 - 2171
作者:Ogura,H. et al.
DOI:——
日期:——
Stephen; Wilson, Journal of the Chemical Society, 1928, p. 1421
作者:Stephen、Wilson
DOI:——
日期:——
Synthesis and antimicrobial activity of some 2-alkyl-2H-1,4-benzothiazin-3(4H)-ones and 2-alkylbenzo[d]imidazolo[2,1-b]-thiazolidin-3-ones
作者:M. Koóš
DOI:10.1007/bf00812716
日期:1994.8
Sodium 2-aminothiophenoxide (1) reacts with ethyl 2-bromoalkanoates (2) under direct cyclization to form 2-alkyl-2H-1,4-benzothiazin-3(4H)-ones (3). Reaction of the sodium salt of 2-mercaptobenzimidazole (4) with 2 or 2-bromoalkanoic acids (5) affords only S-alkylated products (6 or 7, respectively). The cyclization products - 2-alkylbenzo[d] imidazolo[2,1-b]thiazolidin-3-ones (8)- can be obtained only from the corresponding 2-(2-benzimidazolylthio)alkanoic acids (7) by the action of acetic anhydride. Both compounds 3 and 8 exhibit only moderate antimicrobial activity against some gram-positive bacteria.