Zobrazeno 1 - 10
of 18
pro vyhledávání: '"Naoko Hirose"'
Autor:
Hirotaka SHIOZAKI, Satoshi YOKOSE, Masaki SAITOU, Yoh SUZUKI, Naoko HIROSE, Hideyuki SHIMIZU, Kenji MASUDA, Akihiko HASEGAWA, Tadashi KATAYAMA, Yasuhiko OKUMURA
Publikováno v:
Journal of Japanese Society for Laser Dentistry. 16:23-30
Autor:
Naoko Hirose, Satoshi Katayama, Satoshi Takamatsu, Marc Demillequand, Geert Schelkens, Kunisuke Izawa, Jozef Brepoels, Etienne De Cock
Publikováno v:
Nucleosides, Nucleotides and Nucleic Acids. 21:849-861
Perfluoroalkanesulfonyl fluorides are effective dehydroxy-fluorination agents for the hydroxyl group at the sugar moiety of nucleoside derivatives and give the corresponding fluorinated nucleosides in good yield with an inversion of configuration in
Publikováno v:
Tetrahedron Letters. 42:7605-7608
Hypophosphorous acid and dialkyl phosphites are effective radical reducing agents for O-thiocarbonyl groups or halides at the sugar part of nucleoside derivatives and give the corresponding hydrocarbons in high yield.
Autor:
Kunisuke Izawa, Naoko Hirose, Masakazu Nakazawa, Takayoshi Torii, Yasuyuki Otake, Tomoyuki Onishi, Takashi Nakano
Publikováno v:
Tetrahedron Letters. 42:6337-6340
Dihalomethylation of several N-protected amino acid esters gave N-protected α-aminoalkyl-α′-dihalomethylketones, which are useful intermediates for the synthesis of erythro β-amino-α-hydroxycarboxylic acids, in good yield. The dihalomethylketon
Publikováno v:
Tetrahedron Letters. 42:5887-5890
Chloromethylation of N -imine-protected amino acid esters followed by acid hydrolysis gave α-aminoalkyl-α′-chloromethylketone as a HCl salt form in good yield without racemization. The amino group was conveniently protected with carbamate protect
Autor:
Satoshi Takamatsu, Tokumi Maruyama, Satoshi Katayama, Naoko Hirose, Masaki Naito, Kunisuke Izawa
Publikováno v:
Tetrahedron Letters. 42:2325-2328
Publikováno v:
Tetrahedron Letters. 42:2321-2324
An improved synthesis of 9-(2,3-dideoxy-2-fluoro-β- d - threo -pentofuranosyl)adenine ( 1 , FddA) via a fluorination of 3′- O -benzoyl-5′- O -tritylriboside ( 4a ) using noncorrosive triethylamine trihydrofluoride (Et 3 N·3HF) is described. The
Publikováno v:
ChemInform. 32
An improved synthesis of 9-(2,3-dideoxy-2-fluoro-β- d - threo -pentofuranosyl)adenine ( 1 , FddA) via a fluorination of 3′- O -benzoyl-5′- O -tritylriboside ( 4a ) using noncorrosive triethylamine trihydrofluoride (Et 3 N·3HF) is described. The
Autor:
Tokumi Maruyama, Satoshi Katayama, Kunisuke Izawa, Naoko Hirose, Masaki Naito, Satoshi Takamatsu
Publikováno v:
ChemInform. 32
A synthesis of 9-(2,3-dideoxy-2-fluoro-beta-D-threo-pentofuranosyl)adenine (1, FddA) via a 6-chloro-9-(3-deoxy-beta-D-erythro-pentofuranosyl)-9H-purine (9), which was readily obtained from inosine (5), is described. Fluorination at the C2'-beta posit
Publikováno v:
ChemInform. 32
Chloromethylation of N -imine-protected amino acid esters followed by acid hydrolysis gave α-aminoalkyl-α′-chloromethylketone as a HCl salt form in good yield without racemization. The amino group was conveniently protected with carbamate protect