Zobrazeno 1 - 10
of 10
pro vyhledávání: '"Takemasa Hida"'
Publikováno v:
Organic Process Research & Development. 14:1485-1489
Safety evaluation for ozonolysis of β-pinene was conducted using DSC, ARC, and RC1e. ARC measurement showed that the concentration of the ozonized mixture affects its thermal stability. The sample ...
Autor:
Toshiaki Masui, Mikio Kabaki, Masataka Fumoto, Yuuki Fukui, Kyozo Kawata, Hideo Nogusa, Takemasa Hida
Publikováno v:
Organic Process Research & Development. 14:289-294
Novel alcohol oxidation using a Na2WO4−H2O2 system was applied to manufacture 12α-hydroxy-3-oxooleanano-28,13-lactone which is a key intermediate of S-0139. Oxidation of the hydroxyl group of oleanolic acid was optimized based on the design of exp
Autor:
Tetsuo Okada, Aiko Hasegawa, Katsuo Oda, Tsunetoshi Honma, Hideo Nogusa, Hiroshi Hashizume, Makoto Kakinuma, Toshiaki Masui, Yoshiharu Hiramatsu, Takemasa Hida, Kyozo Kawata, Susumu Mitsumori
Publikováno v:
Organic Process Research & Development. 13:1413-1418
A new synthetic process was developed for (+)-2-((1R,2R,3R,5S)-2-amino-6,6-dimethylbicyclo[3.1.1]hept-3-yl)ethanol, a key intermediate of S-5751. Diastereoselective alkylation of (+)-nopinone with ethyl bromoacetate, formation of O-methyl oxime, and
Practical and versatile oxidation of alcohol using novel Na2WO4–H2O2 system under neutral conditions
Autor:
Hideo Nogusa, Takemasa Hida
Publikováno v:
Tetrahedron. 65:270-274
This paper presents a novel Na 2 WO 4 –H 2 O 2 oxidation system. The oxidation of alcohol to ketone or aldehyde was carried out by using N , N -dimethylacetamide, hydrogen peroxide, and a catalytic amount of disodium tungstate dihydrate under neutr
Autor:
Masahiko Nagai, Teruo Sakata, Toshiaki Masui, Hideo Nogusa, Takemasa Hida, Katsuo Oda, Yoshihide Sugata
Publikováno v:
Organic Process Research & Development. 12:442-446
A one-pot synthesis of S-2474 was developed to overcome the problems of a large number of steps, low stereoselectivity, low yield, a large amount of waste, and severe reaction conditions. Aldol-type condensation of 3,5-di-tert-butyl-4-hydroxybenzalde
Autor:
Hideo Nogusa, Takemasa Hida
Publikováno v:
ChemInform. 40
This paper presents a novel Na 2 WO 4 –H 2 O 2 oxidation system. The oxidation of alcohol to ketone or aldehyde was carried out by using N , N -dimethylacetamide, hydrogen peroxide, and a catalytic amount of disodium tungstate dihydrate under neutr
Publikováno v:
Steroids. 63:630-632
The present report describes the improved transformation of the 17-oxo group in 3 beta-acetoxy-5 alpha-androstan-17-one to a 17 alpha-hydroxy group. A mixture of 17 alpha-acetoxy and 16-ene compounds, which are usually produced by the standard synthe
Publikováno v:
Veterinary and Animal Science, Vol 5, Iss , Pp 1-6 (2018)
The aim of this study was to evaluate the efficacy of treatment with estradiol benzoate (EB) at luteal phase prior to the ovum pick-up (OPU) during in vitro production of transferable embryos in Japanese Black cattle. A total of 15 cows were used as
Externí odkaz:
https://doaj.org/article/6bb6585ec2cc43d58f91a213f173c71a
Autor:
Hiroshi Osato, Motonari Osaki, Takao Oyama, Youhei Takagi, Takemasa Hida, Koichi Nishi, Mikio Kabaki
Publikováno v:
Organic Process Research & Development; Nov2011, Vol. 15 Issue 6, p1433-1437, 5p
Development of One-Pot Synthesis of New Antiarthritic Drug Candidate S-2474 with High E-Selectivity.
Autor:
Katsuo Oda, Teruo Sakata, Masahiko Nagai, Yoshihide Sugata, Toshiaki Masui, Hideo Nogusa, Takemasa Hida
Publikováno v:
Organic Process Research & Development; Apr2008, Vol. 12 Issue 3, p442-446, 5p