Identification and synthesis of new bicyclic acetals from the mountain pine beetle, Dendroctonus ponderosae hopkins (Col.: Scol.)
摘要:
Head-space volatiles obtained from male mountain pine beetles, Dendroctonus ponderosae, were analyzed by coupled CC-MS and chiral gas chromatography. 5-Ethyl-7-methyl-6,8-dioxabicyclo[3.2.1] (6) was found as a new naturally occurring isomer of brevicomin (1). In addition, several stereoisomers of 7-ethyl-5-methyl-6,8-dioxabicyclo[3.2.1] (11) and 1-(5-methyl-6,8-dioxabicyclo[3.2.1]octyl)ethanol (12) could be identified. Relative and absolute configurations of the compounds were determined by unambiguous syntheses, which are described. Copyright (C) 1996 Elsevier Science Ltd
Page, Philip C. Bulman; Rayner, Christopher M.; Sutherland, Ian O., Journal of the Chemical Society. Perkin transactions I, 1990, # 9, p. 2403 - 2408
作者:Page, Philip C. Bulman、Rayner, Christopher M.、Sutherland, Ian O.
DOI:——
日期:——
Stereoselective Synthesis of Furans by the Pd-Catalyzed Oshima−Utimoto Reaction
作者:Michael A. Evans、James P. Morken
DOI:10.1021/ol051275s
日期:2005.7.1
The Pd-catalyzed coupling of acyclic allylic alcohols with vinyl ethers was examined and found to proceed with 2.5-10 mol % of catalyst and to provide cyclic acetals with good stereoselection. The reaction is tolerant of a number of functional groups and can be used to generate quaternary centers in a stereoselective fashion.
PAGE, PHILIP C. BULMAN;RAYNER, CHRISTOPHER M.;SUTHERLAND, LAN O., J. CHEM. SOC. PERKIN TRANS.,(1990) N, C. 2403-2408
作者:PAGE, PHILIP C. BULMAN、RAYNER, CHRISTOPHER M.、SUTHERLAND, LAN O.
DOI:——
日期:——
PAGE PH. C. B.; RAYNER CH. M.; SUTHERLAND I. O., TETRAHEDRON LETT., 27,(1986) N 30, 3535-3538
作者:PAGE PH. C. B.、 RAYNER CH. M.、 SUTHERLAND I. O.