Ketal-lactone compounds and their stereoselective cleavage to cyclic ethers
作者:Jong-Gab Jun、Dong Woo Lee
DOI:10.1016/s0040-4039(97)10196-4
日期:1997.11
The easy preparation of ketal-lactone compounds via Diels-Alder reaction, followed by hydrolysis and cyclization and excellent stereoselective ring opening of the ketal-lactone to 6-membered and 7-membered cyclic ethers are described.
Facile Syntheses of 7,7-Dimethyl-6,8-Dioxabicyclo[3.2.1]octane, A Constituent of the Japanese Hop Oil, and Frontalin Via Hetero Diels-Alder Reaction Using Dilution Method
作者:Jong-Gab Jun、In-Suk Lee
DOI:10.1080/00397910008087136
日期:2000.4
Abstract A constituent of the Japanese hop oil, Humulus lupulus, and frontalin has been prepared as racemates in short and the most convenient pathway via hetero Diels-Alderreaction using dilution method.
The absolute configuration of 6,8-dioxabicyclo[3.2.1]octane and several methyl substituted derivatives
作者:N. Ibrahim、T. Eggimann、E.A. Dixon、H. Wieser
DOI:10.1016/s0040-4020(01)81959-1
日期:1990.1
enantiomers of 6,8-dioxabicyclo[3.2.1]octane and the alkyl substituted derivatives, exo- and endo-7-methyl, exo- and endo-5,7-dimethyl, 7,7-dimethyl, and exo- and endo-7-ethyl-5-methyl (exo- and endo-brevicomin), were synthesized stereoselectively with known configuration by standard synthetic methods, or with baker's yeast, or both. The correlation between the absoluteconfiguration of the bicyclic rings and
STUDY ON THE FUNCTIONALIZATION AND REACTIVITY OF BICYCLIC ACETAL COMPOUNDS
作者:Jong-Gab Jun、Ae-Ran Kim、Sung Hoon Kim
DOI:10.1081/scc-120001507
日期:2002.1.1
Bicyclic acetal was known as a versatile reagent for the structural transformation reactions. Bicyclic acetal was functionalized to the acetal-lactol and halo-lactol, and applied for the new rearrangement reactions. The structural identification and rearrangement mechanism were discussed herein.
A novel approach to the synthesis of the cannabinoids