Studies on pyrrolidinones. Synthesis of<i>N</i>-acylpyroglutamic esters with bactericide and fungicide properties
作者:Benoǐt Rigo、Charles Lespagnol、Marc Pauly
DOI:10.1002/jhet.5570250108
日期:1988.1
The best method to prepare N-acylpyroglutamic esters is to react N-trimethylsilylpyroglutamic esters with acid chlorides or diketene. These acylesters possess bactericide and fungicide properties against several microorganisms.
The hydroboration of protected vinylglycine and allylglycine with dicyclohexyl- or diisopinocampheylborane occurs chimio- and regioselectively with attachment of boron to the less substituted end of the carbon-carbon double bond. Homoserine or δ-hydroxynorvaline are readily obtained by oxidation of dicyclohexylborane derivatives and 2-amino-4-boronobutanoic acid or 2-amino-5-boronopentanoic acid by
Electrolytic partial fluorination of organic compounds. Part 61: The first example of direct α-fluorination of protected α-amino acids
作者:Daisuke Baba、Toshio Fuchigami
DOI:10.1016/s0040-4039(02)00924-3
日期:2002.7
α-monofluorination of oxazolidines 1 derived from α-amino acid was successfully carried out. This is the first example of the successful, direct α-fluorination of protected amino acids. Anodic fluorination of methyl N-acetyl pyroglutamate also provided the corresponding α-fluorinated product in moderate yield, while the anodic fluorination of an open-chain α-amino acid, N-(carboethoxy)methylphathalimide, was unsuccessful