Zobrazeno 1 - 10
of 61
pro vyhledávání: '"Taiki Umezawa"'
Publikováno v:
Organics, Vol 3, Iss 3, Pp 187-195 (2022)
The total synthesis of multifidene, a sex pheromone found in brown algae, is described. The synthesis features the highly enantioselective and diastereoselective addition reaction of an aldehyde to a nitroolefin in the presence of a Hayashi–Jørgen
Externí odkaz:
https://doaj.org/article/8cdb0cf44eb44311a0a77a117c6dbd97
Autor:
Loida O. Casalme, Keisuke Katayama, Yoshiki Hayakawa, Kensuke Nakamura, Arisa Yamauchi, Yasuyuki Nogata, Erina Yoshimura, Fuyuhiko Matsuda, Taiki Umezawa
Publikováno v:
Marine Drugs, Vol 20, Iss 2, p 124 (2022)
Some derivatives of dolastatin 16, a depsipeptide natural product first obtained from the sea hare Dolabella auricularia, were synthesized through second-generation synthesis of two unusual amino acids, dolaphenvaline and dolamethylleuine. The second
Externí odkaz:
https://doaj.org/article/e2a3fecc9fd2440aaa890e0fea00f282
Autor:
Taiki Umezawa, Nakaba Mizutani, Koichi Matsuo, Yuugo Tokunaga, Fuyuhiko Matsuda, Tatsuo Nehira
Publikováno v:
Molecules, Vol 26, Iss 5, p 1296 (2021)
A new application of vacuum-ultraviolet circular dichroism (VUVCD), which enables the measurement of CD spectra in the vacuum-ultraviolet region (140–200 nm), for the assignment of the absolute configurations of bromoallenes is described. Bromoalle
Externí odkaz:
https://doaj.org/article/2433ee98ea3a4421a4d1fa6c218ce2d9
Autor:
Taiki Umezawa, Nurcahyo Iman Prakoso, Koichi Tsuji, Yosuke Ogura, Takumi Sato, Fuyuhiko Matsuda
Publikováno v:
Bulletin of the Chemical Society of Japan. 95:1491-1500
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::b4b4cae5aae64101a2749335ce56b709
https://doi.org/10.1246/bcsj.20220196
https://doi.org/10.1246/bcsj.20220196
Autor:
Chin-Soon Phan, Jakia Jerin Mehjabin, Andrea Roxanne J. Anas, Masahiro Hayasaka, Reiko Onoki, Juting Wang, Taiki Umezawa, Kenji Washio, Masaaki Morikawa, Tatsufumi Okino
Publikováno v:
Journal of Natural Products. 85:2000-2005
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::494bf4a3bf5f93c558ba11e9c2bbb6b2
https://doi.org/10.1021/acs.jnatprod.2c00382
https://doi.org/10.1021/acs.jnatprod.2c00382
Autor:
Taiki Umezawa, Takeshi Maeda, Takuya Akiyama, Nurcahyo Iman Prakoso, Jakia Jerin Mehjabin, Tatsufumi Okino, Fuyuhiko Matsuda
Publikováno v:
Chemistry & Biodiversity.
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::e89bd933151e371bbce9af59505bc937
https://doi.org/10.1002/cbdv.202300400
https://doi.org/10.1002/cbdv.202300400
Autor:
Tohru Taniguchi, null Mutmainah, Shu Takimoto, Takahiro Suzuki, Soichiro Watanabe, Fuyuhiko Matsuda, Taiki Umezawa, Kenji Monde
Publikováno v:
Organicbiomolecular chemistry.
The allene functional group in natural products isolated so far exists in a non-racemic form, but its axial chirality is difficult to elucidate. Allenes exhibit a characteristic antisymmetric CCC stretching mode at around 1950 cm
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::aaf1e16f57afbd9418976e1f80704f13
https://pubmed.ncbi.nlm.nih.gov/36541676
https://pubmed.ncbi.nlm.nih.gov/36541676
Publikováno v:
Organic & Biomolecular Chemistry. 19:7822-7826
An efficient synthesis of α,β-dichlorinated ketones from α,β-dichlorinated Weinreb amides is described. Quenching with nonaqueous HCl avoided side reactions associated with typical work-up procedures. The amide reacted with various nucleophiles t
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::8289760af5ba09bd3c8a73c12b69bdee
https://doi.org/10.1039/d1ob01379c
https://doi.org/10.1039/d1ob01379c
Publikováno v:
Chemistry Letters. 49:71-74
A method to create adjacent acid-base pair sites, which are carboxyl and amino groups, respectively, on silica through hydrolysis of pre-anchored amide is proposed. This method can produce an adjac...
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::c929941fac0b7fda2c728bf532a23713
https://doi.org/10.1246/cl.190773
https://doi.org/10.1246/cl.190773
Autor:
Loida O. Casalme, Keisuke Katayama, Yoshiki Hayakawa, Kensuke Nakamura, Arisa Yamauchi, Yasuyuki Nogata, Erina Yoshimura, Fuyuhiko Matsuda, Taiki Umezawa
Publikováno v:
Marine Drugs; Volume 20; Issue 2; Pages: 124
Some derivatives of dolastatin 16, a depsipeptide natural product first obtained from the sea hare Dolabella auricularia, were synthesized through second-generation synthesis of two unusual amino acids, dolaphenvaline and dolamethylleuine. The second
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::df1a9edef9c0432d60d4464fc3fd90ec
https://pubmed.ncbi.nlm.nih.gov/35200652
https://pubmed.ncbi.nlm.nih.gov/35200652