Zobrazeno 1 - 10
of 249
pro vyhledávání: '"Tadahiro Takeda"'
Autor:
Naohiro Ohshima, Ai Hasegawa, Frank Schweizer, Tadahiro Takeda, Fumiyuki Kiuchi, Noriyasu Hada, Yuzo Fujita
Publikováno v:
Molecules, Vol 16, Iss 1, Pp 637-651 (2011)
The novel glycosphingolipid, b-D-GalNAcp(1®4)[a-D-Fucp(1®3)]-b-D-GlcNAcp(1®)Cer (A), isolated from the marine sponge Aplysinella rhax has a unique structure, with D-fucose and N-acetyl-D-galactosamine moieties attached to a reducing-end N-acetyl-D
Externí odkaz:
https://doaj.org/article/79a556712b3b4d859cf33183abfbd3a3
Autor:
Kimiaki Yamano, Naohiro Oshima, Yuna Umeda, Hiromi Kumada, Frank Schweizer, Fumiyuki Kiuchi, Noriyasu Hada, Tadahiro Takeda, Yoshinori Shimazaki
Publikováno v:
Chemical and Pharmaceutical Bulletin. 67:143-154
Stereocontrolled syntheses of biotin-labeled oligosaccharide portions containing the non reducing end oligosaccharides of glycosphingolipids from Ascaris suum have been accomplished. Galα1→3GalNAcβ1→OR (1), Galβ1→3Galα1→3GalNAcβ1→OR (2
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::902e2aa10ec534f141a699338e87657c
https://doi.org/10.1248/cpb.c18-00768
https://doi.org/10.1248/cpb.c18-00768
Autor:
Noriyasu, Hada, Yuna, Umeda, Hiromi, Kumada, Yoshinori, Shimazaki, Kimiaki, Yamano, Frank, Schweizer, Naohiro, Oshima, Tadahiro, Takeda, Fumiyuki, Kiuchi
Publikováno v:
Chemicalpharmaceutical bulletin. 67(2)
Stereocontrolled syntheses of biotin-labeled oligosaccharide portions containing the non reducing end oligosaccharides of glycosphingolipids from Ascaris suum have been accomplished. Galα1→3GalNAcβ1→OR (1), Galβ1→3Galα1→3GalNAcβ1→OR (2
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=pmid________::600b618ca902a81c825f59ea69dc6681
https://pubmed.ncbi.nlm.nih.gov/30713275
https://pubmed.ncbi.nlm.nih.gov/30713275
Publikováno v:
Angewandte Chemie International Edition. 55:4734-4737
A novel asymmetric direct Mannich-type reaction of α-iminophenylacetate esters with thionolactones, bearing a substituent at the α-position, as a less acidic pronucleophile was developed. Using bis(guanidino)iminophosphorane as the chiral organosup
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::043ea28d45ed2724a4ac84deefa56257
https://doi.org/10.1002/anie.201601352
https://doi.org/10.1002/anie.201601352
Publikováno v:
Angewandte Chemie International Edition. 54:15836-15839
A chiral bis(guanidino)iminophosphorane catalyzes enantioselective addition reactions of a 1,3-dithiane derivative as a pronucleophile. The chiral uncharged organosuperbase facilitates the addition of benzyloxycarbonyl-1,3-dithiane to aromatic N-Boc-
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::20850bf7e923ecb3c40d6e66fd31c7fe
https://doi.org/10.1002/anie.201508178
https://doi.org/10.1002/anie.201508178
Publikováno v:
Synlett. 24:2531-2534
Helically chiral spirocyclic P3 phosphazenes were designed as a novel family of chiral organosuperbases. The newly designed chiral P3 phosphazenes were synthesized from commercially available sources in several steps and characterized by X-ray crysta
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::c4ba57d7c9ee63625f719cb78f3cc104
https://doi.org/10.1055/s-0033-1340058
https://doi.org/10.1055/s-0033-1340058
Autor:
SHRESTHA, Suraj Praksh, Fumie, TOIZUMI, Suraj Praksh, SHRESTHA, Tadahiro, TAKEDA, Shoko, YOKOYAMA
Publikováno v:
九州保健福祉大学研究紀要 = Journal of Kyushu University of Health and Welfare. 14:183-187
Propolis, a complex resinous material collected by honeybees from buds and exudates of certain plant sources neighboring its hive, is considered to possess broad spectrum of biological activities and has historical utilization in folk medicine. Thus,
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=jairo_______::e496ea9294879c46d02268e3540c814d
http://id.nii.ac.jp/1147/00000852/
http://id.nii.ac.jp/1147/00000852/
Publikováno v:
ChemInform. 47
A novel asymmetric direct Mannich-type reaction of α-iminophenylacetate esters with thionolactones, bearing a substituent at the α-position, as a less acidic pronucleophile was developed. Using bis(guanidino)iminophosphorane as the chiral organosup
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::87b8dd747f583fad430c39d1120a5ec6
https://doi.org/10.1002/chin.201632079
https://doi.org/10.1002/chin.201632079
Publikováno v:
ChemInform. 47
A chiral bis(guanidino)iminophosphorane catalyzes enantioselective addition reactions of a 1,3-dithiane derivative as a pronucleophile. The chiral uncharged organosuperbase facilitates the addition of benzyloxycarbonyl-1,3-dithiane to aromatic N-Boc-
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::4fe53720b254a28d88f3b8b544a652fb
https://doi.org/10.1002/chin.201617171
https://doi.org/10.1002/chin.201617171
Publikováno v:
Journal of Natural Medicines. 67:240-245
Fractionation of acetone and methanol extracts of Viola yedoensis, under the guidance of inhibition against Clostridium histolyticum collagenase (ChC), resulted in the isolation of esculetin (1) (IC(50) 12 μM) and scopoletin (2) (IC(50) 1.8 μM) as
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::e164632e70a84849144080aa925745b9
https://doi.org/10.1007/s11418-012-0665-8
https://doi.org/10.1007/s11418-012-0665-8