A newdeprotectionprocedure of methylthiomethyl (MTM) ether, a protective group for the hydroxy group, was developed. MTM was oxidized with MCPBA or Oxone, and the resulting sulfoxide was treated under conditions of the Pummerer rearrangement, to give acetoxy sulfide and/or acetoxy acetal. Alkaline hydrolysis of the products provided the unprotected alcohols in good yields. Details of the reactions
Terpene diols and terpene diol glucosides from roots of Urtica dioica
作者:Rupert Kraus、Gerhard Spiteller
DOI:10.1016/s0031-9422(00)95202-6
日期:1991.1
Terpene diols and terpene diol glucosides were detected in methanolic root extracts of Urtica dioica. The structures of five new monoterpenoid components were elucidated by spectrometry. The preparation of trimethylsilyl derivatives of the monoterpene diols and the glucosides enhanced volatility and thermal stability. The mass spectra of the derivatives provided more information compared to those of the free compounds.
BROWN, HERBERT C.;WEISSMAN, STEVEN A.;PERUMAL, P. T.;DHOKTE, U. P., J. ORG. CHEM., 55,(1990) N, C. 1217-1223
作者:BROWN, HERBERT C.、WEISSMAN, STEVEN A.、PERUMAL, P. T.、DHOKTE, U. P.