H. Yoshimura

Publications18
h-index7
Citations114
Highly Influential Citations1
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Studies on the Synthesis of Sesquiterpene Lactones, 16. The Syntheses of 11β,13-Dihydrokauniolide, Estafiatin, Isodehydrocostuslactone, 2-Oxodesoxyligustrin, Arborescin, 1,10-Epiarborescin,…
A total of eleven naturally occurring guaianolides, 11β,13-dihydrokau- niolide, estafiatin, isodehydrocostuslactone, 2-oxodesoxyligustrin, arborescen, 11β,13-dihydroludartin,… Expand
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Studies on the syntheses of sesquiterpene lactones. 15. Syntheses of four possible diastereoisomers of Bohlmann's structure of isoepoxyestafiatin. The stereochemical assignment of isoepoxyestafiatin
The stereochemistry of isoepoxyestafiatin was determined to be 1β,10β:3α,4α-diepoxyguaia-11(13)-eno-12,6α-lactone by the syntheses of the four possible diastereoisomers 23-26
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Preparation of sterically protected 3,4-bis(phosphinidene)cyclobutenes and their isomerism
Sterically protected bis(phosphinidene)cyclobutenes were prepared starting from the diphosphane and their isomerism involving a 1,6-diphosphahexa-1,2,4,5-tetraene intermediate, which is both… Expand
  • 23
Reactions of dichlorocarbene with sterically protected 1-phosphaallene and 1,3-diphosphaallene
Dichlorocarbene reacted with sterically protected 1-phosphaallene and 1,3-diphosphaallene to give a methylene-phosphirane and a methylene-diphosphirane, respectively; the former phosphirane was… Expand
  • 15
The first x-ray analysis of a phospha[3]radialene
2-(Dichloromethylene)-3-(diphenylmethylene)-1-(2,4,6-tri-t-butylphenyl)-1-phosphirane, prepared from 4,4-diphenyl-1-(2,4,6-tri-t-butylphenyl)-1-phospha-1,2,3-butatriene and dichlorocarbene, was… Expand
  • 9
Reaction of Dichlorocarbene with Some Organo-Phosphorus Compounds in Low Coordination States
Abstract The reactions of dichlorocarbene with some organo-Phosphorus compounds in low coordination states such as diphosphenes, phosphaethylenes, phosphaallenes, phosphabutatrienes, and… Expand
  • 6
Reaction of dichlorocarbene with sterically protected phosphabutatriene. Formation of a stable dimethylenephosphirane
Abstract The reaction of dichlorocarbene with 4,4-diphenyl-1-(2,4,6-tri-t-butylphenyl)-1-phosphabutatriene gave 2-dichloromethylene-3-diphenylmethylene-1-(2,4,6-tri-t-butylphenyl)-1-phosphirane via… Expand
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Studies on the synthesis of sesquiterpene lactones, 16. The syntheses of 11 beta, 13-dihydrokauniolide, estafiatin, isodehydrocostuslactone, 2-oxodesoxyligustrin, arborescin, 1,10-epiarborescin, 11…
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Preparation of 1,4-diphosphabutatriene from 3-dichloromethylene-1,2-diphosphirane.
3-Dichloromethylene-1,2-bis(2,4,6-tri-t-butylphenyl)-1,2-diphosphirane reacted with lithium naphthalenide to give 1,4-bis(2,4,6-tri-t-butylphenyl)-1,4-diphosphabutatriene, whereas the reaction with… Expand
  • 9
Carrier transport in titanyl phthalocyanine pigment dispersed in binder polymer
The carrier transport mechanism of a single-layered photoreceptor containing titanyl phthalocyanine pigment dispersed in an insulating binder polymer was investigated by the measurement of hole drift… Expand
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