Zobrazeno 1 - 10
of 30
pro vyhledávání: '"Koichiro, Ota"'
Autor:
Kazuo Kamaike, Mutsumi Sano, Daisuke Sakata, Yu Nishihara, Hiroaki Amino, Akihiro Ohtsuki, Yui Okada, Takafumi Miyakawa, Makoto Kogawara, Mai Tsutsumi, Misato Takahashi, Etsuko Kawashima, Koichiro Ota, Hiroaki Miyaoka
Publikováno v:
Journal of Nucleic Acids, Vol 2023 (2023)
MGB polyamide-oligonucleotide conjugates ON 1-4 with linked MGB polyamides at the 2-exocyclic amino group of a guanine base using aminoalkyl linkers were synthesized and evaluated in terms of binding affinity for complementary DNA containing the MGB
Externí odkaz:
https://doaj.org/article/7c667739093242999727e4eb30dff612
Publikováno v:
Synlett. 34:271-276
Herein, we report the first total synthesis of cephalosporolide J, which is a deep sea sediment derived polyketide harboring a unique bicyclo[3.3.0]furanolactone moiety. The adopted synthetic strategy consisted of the alkynylation of γ-lactone with
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::1b325407da4e7dc26d7cd970f28d7fcf
https://doi.org/10.1055/a-1967-1284
https://doi.org/10.1055/a-1967-1284
Autor:
Koichiro Ota, Taiki Watanabe, Shuntaro Igarashi, Shinnosuke Okazaki, Kazuo Kamaike, Hiroaki Miyaoka
Publikováno v:
RSC Advances. 12:16576-16580
This study reports the stereoselective total syntheses of the antipodes of the unique 3/10 bicyclic skeletal sesquiterpenoids, namely, hypocoprin A and hypocoprin B.
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::a349ceb5b98b1e850f212bb58ac98c76
https://doi.org/10.1039/d2ra02891c
https://doi.org/10.1039/d2ra02891c
Autor:
Shinnosuke Okazaki, Kaho Senda, Ayaka Tokuta, Misa Inagaki, Kazuo Kamaike, Koichiro Ota, Hiroaki Miyaoka
Publikováno v:
Organic & Biomolecular Chemistry. 20:6771-6775
This study reports the biomimetic total synthesis of the marine polyketide plakortone Q via acid-mediated tandem cyclization.
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::0da308d9bfc1765ca7fb101418ec080c
https://doi.org/10.1039/d2ob01032a
https://doi.org/10.1039/d2ob01032a
Publikováno v:
Synthesis. 54:689-696
ent-Eudesmane-type terpenoids constitute a large class of natural products derived from plants, animals, and bacteria. We describe a synthetic approach to two ent-eudesmane-type terpenoids, sinupol and eutyscoparin A, that relies on a key π-facial-
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::076fce1c520331ad7f171dcc1e4f72aa
https://doi.org/10.1055/a-1643-5729
https://doi.org/10.1055/a-1643-5729
Publikováno v:
Chemical and Pharmaceutical Bulletin. 69:590-594
Eiseniachloride B is a marine chlorinated oxylipin isolated from the brown alga Eisenia bicyclis. This natural product contains cyclopentane, chlorohydrin, and 14-membered lactone systems that incorporate five stereogenic centers. In this paper, we r
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::e432fe0cbde7099be579d5078b810978
https://doi.org/10.1248/cpb.c21-00091
https://doi.org/10.1248/cpb.c21-00091
Autor:
Koichiro, Ota, Taiki, Watanabe, Shuntaro, Igarashi, Shinnosuke, Okazaki, Kazuo, Kamaike, Hiroaki, Miyaoka
Publikováno v:
RSC advances. 12(26)
This study reports the stereoselective total syntheses of the antipodes of the unique 3/10 bicyclic skeletal sesquiterpenoids, namely, hypocoprin A and hypocoprin B. The synthesis involved conjugate addition accelerated by trimethylsilyl chloride, co
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=pmid________::d0a00c93e5db6b61d6e50442170d6e31
https://pubmed.ncbi.nlm.nih.gov/35754888
https://pubmed.ncbi.nlm.nih.gov/35754888
Publikováno v:
Synlett. 31:1730-1734
An enantioselective total synthesis of the marine tricyclic polyketide ascospiroketal B, previously isolated from the marine-derived fungus Ascochyta salicorniae, was accomplished in 21 steps by using an improved route. The intriguing 5,5-spiroketal-
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::8052df690a5c2e3052d79be92aa51a8b
https://doi.org/10.1055/s-0040-1706405
https://doi.org/10.1055/s-0040-1706405
Publikováno v:
Synlett. 31:1007-1010
Herein, a concise strategy designed to provide general and diversifiable access to various prenyleudesmane terpenoids is described and utilized in the asymmetric synthesis of a biologically active prenyleudesmane diterpenoid, sinupol, which is accomp
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::fd58c30b06e4ddffc7ba978903af1ca8
https://doi.org/10.1055/s-0037-1610757
https://doi.org/10.1055/s-0037-1610757
Publikováno v:
Marine Drugs, Vol 7, Iss 4, Pp 654-671 (2009)
Xestenone is a marine norditerpenoid found in the northeastern Pacific sponge Xestospongia vanilla. The relative configuration of C-3 and C-7 in xestenone was determined by NOESY spectral analysis. However the relative configuration of C-12 and the a
Externí odkaz:
https://doaj.org/article/1169881add744a57998a05dcc6ad08a5