Zobrazeno 1 - 10
of 127
pro vyhledávání: '"Motoharu Ju-ichi"'
Autor:
Eri Torii, Yusuke Kobayashi, Kaori Takahashi, Motoharu Ju-ichi, Hiroyo Nagata, Tetsutaro Kimachi
Publikováno v:
Synlett. 2011:365-368
A series of unsymmetrical 2,3-diaryl epoxides were hydrogenatedunder transfer-hydrogenation conditions using the polyurea-encapsulatedpalladium catalyst [Pd(0)EnCat TM ].The position of the cleaved C-O bond was determined by ¹ HNMR analysis of the r
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::ccce27a0b7701d634b21b44ca376fec1
https://doi.org/10.1055/s-0030-1259505
https://doi.org/10.1055/s-0030-1259505
Publikováno v:
Chemical and Pharmaceutical Bulletin. 59:753-756
Synthesis of dehydoriso-β-lapachone (1) in both racemic and enantioenriched forms is achieved starting from reduced naphthoquinone equivalents. As for the synthesis of enantioenriched dehydroiso-β-lapachone, introduction of the asymmetric center wa
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::057d56a8d490cc1a662587799dfa11c1
https://doi.org/10.1248/cpb.59.753
https://doi.org/10.1248/cpb.59.753
Publikováno v:
Synlett. 2010:2330-2334
Asymmetric Darzens-type epoxide formation of aryl aldehydes with chiral para-substituted benzylammonium ylides, prepared from brucine and corresponding benzylic chlorides and treated in situ under basic condition, was carried out to afford chiral 2,3
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::73131c7be0507ddf6b5809622356d010
https://doi.org/10.1055/s-0030-1258015
https://doi.org/10.1055/s-0030-1258015
Publikováno v:
Tetrahedron: Asymmetry. 20:1683-1689
Starting from a reduced lapachol compound, the total synthesis of rhinacanthin A in both racemic and enantioenriched forms is achieved in eight steps without forming any undesired β-lapachone derivatives. For the synthesis of enantioenriched rhinaca
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::bbf33d4fa30925f20d1bc125b4bd48f7
https://doi.org/10.1016/j.tetasy.2009.06.025
https://doi.org/10.1016/j.tetasy.2009.06.025
Autor:
Chihiro Ito, Yoshimi Kitaguchi, Yu Jinguji, Masumi Kurosawa, Kaori Ushijima, Asae Ochi, Naoko Negi, Motoharu Ju-ichi, Naoko Teshima, Yukako Kitaji, Keiko Saito, Ahmad Muhamad Abou-Dough, Eri Kusakabe
Publikováno v:
Natural product communications. 10(4)
Four new coumarins, isomurralonginol senecioate (1), isomurralonginoic acid (2), murrangatin 2′-formate (3), and meranzin hydrate 2′-palmitate (4), were isolated from the vegetative branches of Murraya exotica together with 33 known compounds. Th
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::6d953d1648517228348d66e8d7e8874b
https://pubmed.ncbi.nlm.nih.gov/25973490
https://pubmed.ncbi.nlm.nih.gov/25973490
Publikováno v:
Natural product communications. 10(2)
Four new coumarins, murrangatin-1′-senecioate (1), 5-methoxypanial (2), mexoticin-2′-senecioate (3) and murralongic acid (4), were isolated from the leaves of Murraya paniculata var. zollingeri, together with 23 known coumarins. The structures of
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::1fc328e9ac08480dfffd46e594cebbc9
https://pubmed.ncbi.nlm.nih.gov/25920269
https://pubmed.ncbi.nlm.nih.gov/25920269
Autor:
Motoharu Ju-ichi
Publikováno v:
YAKUGAKU ZASSHI. 125:231-254
The constituents of Citrus plants were investigated to develop useful agents that are effective in cancer chemoprevention. We examined the roots and bark of the roots of various Citrus plants, resulting in the isolation of many novel compounds. Their
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::906ee173e19ccf0d4d8d9300721638dd
https://doi.org/10.1248/yakushi.125.231
https://doi.org/10.1248/yakushi.125.231
Publikováno v:
Tetrahedron. 61:2607-2622
We designed two aromatic analogues 1a and 1b of macrolactin A with expectation of enhancing biological activity and metabolical stability. As a result of retrosynthetic analysis of these compounds 1a–b , two synthetic strategies have been examined.
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::3c18497f54cabb472570c39b012ab35d
https://doi.org/10.1016/j.tet.2005.01.062
https://doi.org/10.1016/j.tet.2005.01.062
Autor:
Hiroshi Furukawa, Motoharu Ju-ichi, Harukuni Tokuda, Naoyuki Sakamoto, Hoyoku Nishino, Masataka Itoigawa, Chihiro Ito
Publikováno v:
Planta Medica. 71:84-87
In order to identify antitumor-promoting agents, we performed primary in vitro screening of 31 coumarins isolated from 11 plants of the Citrus species (Rutaceae), examining their possible inhibitory effects on Epstein-Barr virus early antigen (EBV-EA
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::cb47d249647d5a94beb5044a3bf0faa6
https://doi.org/10.1055/s-2005-837758
https://doi.org/10.1055/s-2005-837758
Publikováno v:
Tetrahedron Letters. 45:677-680
Total asymmetric synthesis of macrolactin A analogue was accomplished by the convergent strategy. Rapid access to advanced intermediate 16 through isomerization of ynone to (E,E)-conjugated dienone is a key step of this synthesis. Overall, control of
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::11b7f3f8ab340cfb7caf8c6e5ab0e133
https://doi.org/10.1016/j.tetlet.2003.11.055
https://doi.org/10.1016/j.tetlet.2003.11.055