Synthesis of the propionates of (2r, 8r)- and (2s, 8r)-8-methyl-2-decanol, the pheromone of the western corn rootworm, employing chiral compounds of microbial origin as starting materials
作者:Kenji Mori、Hindenori Watanabe
DOI:10.1016/s0040-4020(01)91175-5
日期:1984.1
The attractants of the western corn rootworm (Diabrotica virgiferaLe Counte), the propionates of (2R, 8R)-and (2S, 8R)-8-methyl-2-decanol, were synthesized from (R)-(+)-citronellol and the enantiomers of ethyl β-hydroxybutryate of microbial origin.
由(R)-(+)-香茅醇合成西部玉米根虫(Diabrotica virgifera Le Counte)的引诱剂,(2R,8R)-和(2S,8R)-8-甲基-2-癸醇的丙酸酯。和微生物来源的β-羟基丁酸乙酯的对映体。
Stereocontrolled synthesis of substituted N-arenesulfonyl azetidines from γ-(phenylseleno)alkyl arylsulfonamides
Different synthetic methodologies for the stereocontrolledsynthesis of substituted azetidines are reported. The approach utilizes an optimized oxidation reaction of gamma-(phenylseleno)alkyl arylsulfonamides, followed by the intramolecular substitution of the resulting phenylselenonyl group by the nitrogen atom.
A simple synthesis of (S)-(+)-sulcatol, the pheromone of gnathotrichus retusus, employing baker's yeast for asymmetric reduction
作者:Kenji Mori
DOI:10.1016/s0040-4020(01)92449-4
日期:1981.1
Ethyl (5)-3-hydroxybutanoate of 87% optical purity was obtained by the yeast reduction of ethyl acetoacetatc and was converted into 85–87% optically pure (S)-(+)-sulcatol (6-methyl-5-hepten-2-ol) by a 5-step sequence in 73% overall yield.
Stereocontrol by introduction of a sulfur functional group in the asymmetric reduction of β-ketoesters with baker's yeast; preparation of optically pure 3s-hydroxydithioesters as a new chiral synthon of natural product synthesis
Asymmetric reduction of β-ketothioester derivatives with baker's yeast produced the corresponding opticallypure 3S-hydroxyethioesters, which are useful chiral building blocks in organic synthesis. The utility of the present method was demonstrated in the stereoselectivesynthesis of sex attractant of pine saw-fly, (2S,3S,7S)-5,7-dimethylpentadec-2-yl acetate from the SS-hydroxy esters.