Zobrazeno 1 - 10
of 177
pro vyhledávání: '"Tomohisa Takita"'
Autor:
Tomohisa Takita, Yoshiaki Takahashi, Nobuhiro Ito, Tomio Takeuchi, Hitoshi Nakayama, Kumi Ichikawa, Keiki Katagiri, Toshiaki Miyake
Publikováno v:
Tetrahedron Letters. 42:1053-1056
Optically pure 1 d - chiro -inositol (DCI) has been synthesized from optically inactive myo -inositol practically in four steps. The crystalline nature of most intermediates and the utilization of inexpensive reagents facilitate the economical mass p
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::c020472181b678dee5b8f17d02a61bea
https://doi.org/10.1016/s0040-4039(00)02178-x
https://doi.org/10.1016/s0040-4039(00)02178-x
Publikováno v:
ChemInform. 22
Intramolecular cyclization of the cis -epoxy-alcohol ( 6 ) with KOH in aq.DMSO provided predominantly the oxetane compound ( 7 ), which on oxidation followed by Baeyer-Villiger reaction gave 1-O- acetyl-D-erythrooxetanoses.
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::1a12d2229e0bd05b1d6d7764a6692122
https://doi.org/10.1002/chin.199109322
https://doi.org/10.1002/chin.199109322
Publikováno v:
ChemInform. 23
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::c6bb299b9f8846f8fd5645dd99c7ae00
https://doi.org/10.1002/chin.199216307
https://doi.org/10.1002/chin.199216307
Publikováno v:
ChemInform. 24
Treatment of 2,2-bis(benzyloxymethyl)cyclopropanecarboxylic acid 8 with ethyl chloroformate and sodium azide followed by thermolysis of the resulting keto azide 9 at 80 °C provided the corresponding isocyanate 10, which was then converted into 2,2-b
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::fc65d90612461fc8e46650128bf0338a
https://doi.org/10.1002/chin.199304257
https://doi.org/10.1002/chin.199304257
Publikováno v:
ChemInform. 23
(1 R 2 R ,3 S )-1-Amino-2,3-bishydroxymethylcyclobutane derivatives ( 14, 15 ) have been synthesized enantioselectively by [2+3] formation of a cyclopentane ring from (−)-dimenthyl succinate and 3-chloro-2-(chloromethyl)-1-propene and the subsequen
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::21af462f9f8adc0f3b50a830f0c76455
https://doi.org/10.1002/chin.199224270
https://doi.org/10.1002/chin.199224270
Autor:
Tomohisa Takita, Shosuke Yamamura, Kumiko Nakayama, Takao Izawa, Kuniki Kato, Shigeru Nishiyama
Publikováno v:
ChemInform. 24
The arabino-lactone triflate 4 reacts with K2CO3 in MeOH to give the oxetane ester 5 and the tetrahydrofuran ester 6 in a ratio dependent upon the reaction temperature.
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::d50676f49d42a9254e8db8dabb13e5d0
https://doi.org/10.1002/chin.199313264
https://doi.org/10.1002/chin.199313264
Publikováno v:
ChemInform. 24
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::13a240321992692d0e8e046c6cf381a0
https://doi.org/10.1002/chin.199319286
https://doi.org/10.1002/chin.199319286
Publikováno v:
Tetrahedron. 48:1573-1580
(1 R 2 R ,3 S )-1-Amino-2,3-bishydroxymethylcyclobutane derivatives ( 14, 15 ) have been synthesized enantioselectively by [2+3] formation of a cyclopentane ring from (−)-dimenthyl succinate and 3-chloro-2-(chloromethyl)-1-propene and the subsequen
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::9c6b1df277ddf42f2e8b9e243cfbe185
https://doi.org/10.1016/s0040-4020(01)88715-9
https://doi.org/10.1016/s0040-4020(01)88715-9
Publikováno v:
Nucleosides and Nucleotides. 11:417-436
Upon treatment of 1-O-acetyl-D-erythrooxetanoses (17a,b and 26) with trimethylsilyl N-benzoyladenine or allyltrimethylsilane in the presence of SnCl4, the ring expanded products (18, 19 and 29) or the acyclic compounds (27 and 28) were obtained. The
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::059596863f10655f56e3b96be9407d91
https://doi.org/10.1080/07328319208021715
https://doi.org/10.1080/07328319208021715
Synthesis of carbocyclic nucleosides: synthesis of (±)-2,2-bis(hydroxymethyl)cyclopropyl nucleosides
Publikováno v:
J. Chem. Soc., Perkin Trans. 1. :2519-2525
Treatment of 2,2-bis(benzyloxymethyl)cyclopropanecarboxylic acid 8 with ethyl chloroformate and sodium azide followed by thermolysis of the resulting keto azide 9 at 80 °C provided the corresponding isocyanate 10, which was then converted into 2,2-b
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::d867677c93114d9c5d3a8a861e400b24
https://doi.org/10.1039/p19920002519
https://doi.org/10.1039/p19920002519