Zobrazeno 1 - 10
of 15
pro vyhledávání: '"Tamura A"'
Autor:
Yoshinobu Yokomori, Rui Tamura
Publikováno v:
ChemInform. 22
The structure of 2-hydroxycyclohexanespiro(2′-cyano-2′-methoxycarbonyl)cyclopropane, prepared by the reaction of 1,2-epoxy-1-(nitromethyl)cyclohexane with methyl sodiocyanoacetate, has been determined from X-ray diffraction data. There are two in
Autor:
Shuji Akai, Yasuyuki Kita, Hiromichi Fujioka, Yasumitsu Tamura, Hitoshi Tone, Youichi Taniguchi
Publikováno v:
ChemInform. 25
The total synthesis of OPC-15161 1, a new inhibitor of superoxide anion generation, is described in full. Three approaches, routes A–C, have been investigated focusing on the pivotal structure 2,5-dioxygenated pyrazine 4-oxide. Among them, route A
Publikováno v:
ChemInform. 26
Reactions of the title compounds with several nucelophiles suggested that the ring oxygen atom (O-5) accelerated the reactivity of the nitro alkene moiety, but scarcely affected the stereoselectivity of the nucleophilic attack.
Publikováno v:
ChemInform. 27
Publikováno v:
ChemInform. 28
Publikováno v:
ChemInform. 29
Marine eicosanoid bacillariolide II was synthesized from ( R )-malic acid, involving the diastereoselective one-pot formation of chiral cyclopentane derivative 12 from the anion of allyl phenyl sulfone and chiral epoxymesylate 11 as the key step.
Publikováno v:
ChemInform. 32
Marine oxylipin bacillariolides I–III were synthesized from (R)-malic acid, using diastereoselective one-pot formation of the chiral cyclopentane derivative from the anion of allyl phenyl sulfone and chiral epoxymesylate as the key reaction.
Autor:
Shunichi Hashimoto, Makoto Nakajima, T. Takahashi, Hideyuki Tsutsui, Masafumi Tamura, Shinji Kitagaki
Publikováno v:
ChemInform. 32
A highly efficient one-pot construction of optically active 1,1′-spirobi[indan-3,3′-dione] derivative (up to 80% ee) has been achieved by exploiting the double intramolecular C–H insertion reaction of dimethyl 2,2′-methylenebis(α-diazo-β-ox
Autor:
Masao Akagi, Tetsuya Kumashiro, Daichi Omae, Hidehito Urata, Yoshinori Tamura, Tetsujiro Ueda
Publikováno v:
ChemInform. 33
L-Ribose was synthesized by a simple four-step method with overall yield of 76.3% from a protected L-arabinose derivative, which is a compatible intermediate for the synthesis of L-deoxyribose. The key step of this strategy is the Swern oxidation and
Autor:
Kazuo Furihata, Hiroshi Matsufuji, Kaori Morita, Naoya Kikuchi, Dalal Asker, Kenji Ueda, Teruhiko Beppu, Kazuya Tamura, Shohei Sakuda, Shoichi Amano
Publikováno v:
ChemInform. 41
Astaxanthin dirhamnoside, a new astaxanthin derivative produced by a radio-tolerant bacterium, Sphingomonas astaxanthinifaciens