Zobrazeno 1 - 10
of 17
pro vyhledávání: '"Tatsuo Sugioka"'
Publikováno v:
The Journal of Organic Chemistry. 59:6606-6613
Autor:
K. Gawronska, Nobuyuki Harada, J. Gawronski, Tatsuo Sugioka, Hisashi Uda, Hiroshi Ono, Takeo Kuriki, Asami Saito
Publikováno v:
ChemInform. 22
Publikováno v:
ChemInform. 23
The 8a R absolute stereochemistry of Wieland-Miescher ketone (-)- I was established by the X-ray structure analysis of its bis(4-bromobenzoate) derivatives (1 R ,6 R ,8a R )-(+)- IV and (1 R ,6 S ,8a R )-(-)- V . The absolute configuration of (-)- I
Publikováno v:
ChemInform. 26
Autor:
Nobuyuki Harada, Tatsuo Sugioka
Publikováno v:
ChemInform. 27
Publisher Summary The absolute stereostructures of halenaquinone (+)-l, halenaquinol (+)-2, halenaquinol sulfate (+)-3, xestoquinone (+)-4, and xestoquinol 62, novel pentacyclic marine natural products isolated from tropical marine sponges, were theo
Publikováno v:
Collection of Czechoslovak Chemical Communications. 57:1459-1465
The 8aR absolute stereochemistry of Wieland-Miescher ketone (-)-I was established by the X-ray structure analysis of its bis(4-bromobenzoate) derivatives (1R,6R,8aR)-(+)-IV and (1R,6S,8aR)-(-)-V. The absolute configuration of (-)-I was corroborated f
Autor:
Hisashi Uda, Krystyna Gawronska, Tatsuo Sugioka, Jacek Gawronski, Hiroshi Ono, Nobuyuki Harada, Takeo Kuriki, Akira Saito
Publikováno v:
Journal of the American Chemical Society. 113:3842-3850
Publikováno v:
The Journal of Organic Chemistry. 55:3158-3163
The first total synthesis of (+)-xestoquinone 1, a biologically active marine natural product isolated from tropical marine sponges, was achieved. Therefore, the absolute stereochemistry of (+)-xestoquinone 1 was determined to be 12bS. Finally, xesto
Publikováno v:
Synthesis. 1990:53-56
An efficient preparation procedure of optically pure Wieland-Miescher ketone, (8aR)-(−)-3,4,8,8a-tetrahydro-8a-methyl-1,6(2H,7H)-naphthalenedione (1), is described, and its absolute stereochemistry is confirmed by the application of the CD exciton