Zobrazeno 1 - 10
of 30
pro vyhledávání: '"Shigeo Amemiya"'
Publikováno v:
ChemInform. 22
A new reducing agent ( 2j ) reduced the enone ( 4 ) to give 15( S )-allylic alcohol ( 5a ) with excellent regio- and stereoselectivity through a five membered ring transition state. Stereoselecrivity of this reaction will be explained based on the LU
Autor:
Shigeo Amemiya, Koichi Kojima
Publikováno v:
ChemInform. 26
3-Oxa-5-methyleneisocarbacyclin (14a) and 3-Oxa-5-ethylideneisocarbacyclin (19a) were synthesized. Compound 14a showed a potent antiplatelet aggregating activity, whereas 19a was inactive.
Publikováno v:
Tetrahedron. 47:2773-2784
A new reducing agent ( 2j ) reduced the enone ( 4 ) to give 15( S )-allylic alcohol ( 5a ) with excellent regio- and stereoselectivity through a five membered ring transition state. Stereoselecrivity of this reaction will be explained based on the LU
Publikováno v:
IEEE Global Telecommunications Conference, 1989, and Exhibition. 'Communications Technology for the 1990s and Beyond.
The authors discuss the broadband customer premises network (CPN) configuration for B-ISDN (broadband integrated services digital network) and propose an optical passive bus scheme with ATM (asynchronous transfer mode) access. To confirm the feasibil
Publikováno v:
ISSLS 88., International Symposium on Subscriber Loops and Services.
The authors discuss the user-network interface configuration for broadband ISDN and propose an optical passive bus scheme with ATM (asynchronous transfer mode) access, to realize a flexible and expansible customers' premises network. To confirm the f
Autor:
Shigeo Amemiya, Koichi Kojima
Publikováno v:
Chemicalpharmaceutical bulletin. 41(5)
3-Oxa-5-methyleneisocarbacyclin (14a) and 3-Oxa-5-ethylideneisocarbacyclin (19a) were synthesized. Compound 14a showed a potent antiplatelet aggregating activity, whereas 19a was inactive.
Publikováno v:
IEEE International Conference on Communications, Including Supercomm Technical Sessions.
The authors discuss the architecture of broadband integrated services digital network (B-ISDN) in accordance with CCITT standardization and propose a ring-based subscriber access network to obtain higher transmission efficiency and flexibility in ban
Publikováno v:
Chemical and Pharmaceutical Bulletin. 35:948-956
A prostacyclin analogue, dl-3-oxa-9 (Ο)-methano-Δ6 (9α) -prostaglandin I1 (1a), has been synthesized. The key step for this synthesis is a new, one-step conversion reaction of the (hydroxymethyl) cyclopropylketone group in 8 and 21 to the γ, δ-u
Publikováno v:
Chemical and Pharmaceutical Bulletin. 35:4000-4015
Optically active 3-hetero analogues of isocarbacyclin (34a, 38, 39, 40 and 42) as well as ω-chain analogues have been synthesized from the bicyclic alcohol (1). Compound 34d had more potent anti-platelet aggregating activity than prostacyclin in hum
Publikováno v:
Tetrahedron Letters. 20:2365-2368
Natural (−)-botryodiplodin(1) has been synthesized from an antibiotic methylenomycin A (2). The absolute configurations of (−)-botryodiplodin(1 and methylenomycin A (2) have also been established as shown in 1 and 2 respectively.