Zobrazeno 1 - 10
of 13
pro vyhledávání: '"Ippei, Kagiyama"'
Autor:
David H., Sherman, Williams, Robert M., Kayo, Sugimoto, Yusaku, Sadahiro, Ippei, Kagiyama, Hikaru, Katou, David H. , Sherman, Robert M., Williams, Sachiko, Tsukamoto
Publikováno v:
Tetrrahedron Lettters. 58(29):2297-2800
A new prenylated alkaloid, Amoenamide A (6), was isolated from the fungus Aspergillus amoenus NRRL 35600. Previously, 6 was postulated to be a precursor of Notoamide E4 (21) converted from Notoamide E (16), which was a key precursor of the prenylated
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::f01f73a351b4789fa763c8049936788b
http://hdl.handle.net/2298/00043533
http://hdl.handle.net/2298/00043533
Autor:
Yuki Hitora, Hikaru Kato, Mika Nagaki, Momona Sebe, Keisuke Eguchi, Robert M. Williams, Sachiko Tsukamoto, Ippei Kagiyama, Jens Christian Frisvad
Publikováno v:
Journal of natural products. 82(5)
Four new norditerpenes, taichunins A-D (1-4), were isolated from the fungus Aspergillus taichungensis (IBT 19404). Compound 1 has a new carbon framework. The absolute configurations were determined by the calculated ECD spectral method. Compound 1 wa
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::c7d361108a20949a6e060afccef74f9f
https://pubmed.ncbi.nlm.nih.gov/30995043
https://pubmed.ncbi.nlm.nih.gov/30995043
Autor:
Yuki Hitora, Nicole J. de Voogd, Ahmed H. El-Desoky, Remy E. P. Mangindaan, Fitje Losung, Hikaru Kato, Sachiko Tsukamoto, Ippei Kagiyama
Publikováno v:
Journal of Natural Products. 80:90-95
Six new spongian diterpene derivatives, ceylonins A–F (1–6), were isolated from the Indonesian marine sponge Spongia ceylonensis along with spongia-13(16),14-dien-19-oic acid (7). They contained three additional carbons in ring D to supply an eth
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::042277e4f39815ef4cb5720488c05731
https://doi.org/10.1021/acs.jnatprod.6b00725
https://doi.org/10.1021/acs.jnatprod.6b00725
Autor:
Kayo, Sugimoto, Yusaku, Sadahiro, Ippei, Kagiyama, Hikaru, Kato, David H, Sherman, Robert M, Williams, Sachiko, Tsukamoto
Publikováno v:
Tetrahedron letters. 58(29)
A new prenylated alkaloid, Amoenamide A (6), was isolated from the fungus Aspergillus amoenus NRRL 35600. Previously, 6 was postulated to be a precursor of Notoamide E4 (21) converted from Notoamide E (16), which was a key precursor of the prenylated
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=pmid________::b0855eeede4b31d3d411ba899d7d1ab6
https://pubmed.ncbi.nlm.nih.gov/29622844
https://pubmed.ncbi.nlm.nih.gov/29622844
Autor:
Losung, Fitje, Mangindaan, Remy E. P., de Voogd, Nicole J., Masaki, Gushiken, Ippei, Kagiyama, Hikaru, Kato, Toshiyuki, Kuwana, Fitje , Losung, Remy E. P. , Mangindaan, Nicole J. , de Voogd, Sachiko, Tsukamoto
Publikováno v:
Journal of Natural Medicines. 69:595-600
Five new polyketide endoperoxides, manadodioxans A−E, were isolated from the marine sponge Plakortis bergquistae. Manadodioxan E showed antimicrobial activity against Escherichia coli at 10 μg/disk, while its oxo congener, manadodioxan D, was inac
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::37dd49856bc325aac9e7f66003ce18a8
http://hdl.handle.net/2298/00043547
http://hdl.handle.net/2298/00043547
Autor:
Jens Christian Frisvad, Kayo Sugimoto, Sachiko Tsukamoto, David H. Sherman, Robert M. Williams, Ippei Kagiyama, Kanae Matsuo, Takashi Nakahara, Hikaru Kato
Publikováno v:
Organic Letters. 17:700-703
Notoamide S has been hypothesized to be a key biosynthetic intermediate for characteristic metabolites stephacidin A, notoamide B, and versicolamide B in Aspergillus sp. but has not yet been isolated. The isolation of notoamide S and an enantiomeric
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::63d3df538e61c2e8394fbc23b0efa9cb
https://doi.org/10.1021/ol5037198
https://doi.org/10.1021/ol5037198
Autor:
Jennifer M. Finefield, James D. Sunderhaus, David H. Sherman, Hikaru Kato, Robert M. Williams, Takashi Nakahara, Sachiko Tsukamoto, Ippei Kagiyama, Michitaka Yamaguchi
Publikováno v:
Tetrahedron Letters. 56(1):247-251
We previously described the bioconversion of Notoamide T into (+)-Stephacidin A and (−)-Notoamide B, which suggested that Versicolamide B (8) is biosynthesized from 6-epi-Notoamide T (10) via 6-epi-Stephacidin A. Here we report that [13C]2-10 was i
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::46045ac5eac607aad59ff0d365cce764
http://hdl.handle.net/2298/00043552
http://hdl.handle.net/2298/00043552
Autor:
Hikaru Kato, David H. Sherman, Takashi Nakahara, Robert M. Williams, Ippei Kagiyama, Kayo Sugimoto, Kanae Matsuo, Jens Christian Frisvad, Sachiko Tsukamoto
Publikováno v:
Organic letters. 20(1)
Notoamide S has been hypothesized to be a key biosynthetic intermediate for characteristic metabolites, stephacidin A, notoamide B, and versicolamide B, in Aspergillus sp., but has not yet been isolated. The isolation of notoamide S and an enantiomer
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::82090ec6147c6fa998cc3b0fbd5e78c1
https://pubmed.ncbi.nlm.nih.gov/25615822
https://pubmed.ncbi.nlm.nih.gov/25615822
Autor:
Nicole J. de Voogd, Nagwa M. Ammar, Hikaru Kato, Ahmed H. Afifi, Remy E. P. Mangindaan, Ahmed H. El-Desoky, Sachiko Tsukamoto, Mohammed S. Hifnawy, Ippei Kagiyama
Publikováno v:
Journal of natural products. 80(7)
Three new furanosesterterpene tetronic acids, sulawesins A–C (1–3), were isolated from a Psammocinia sp. marine sponge, along with the known compounds ircinins-1 (4) and -2 (5). Although ircinins-1 and -2 were previously isolated as (+)- or (−)
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::2739336a217a0301e9fb42a7daa88a8d
https://pubmed.ncbi.nlm.nih.gov/28621941
https://pubmed.ncbi.nlm.nih.gov/28621941
Autor:
Hikaru Kato, Ippei Kagiyama, Tatsuo Nehira, David H. Sherman, Robert M. Williams, Jens Christian Frisvad, Sachiko Tsukamoto
Publikováno v:
ChemInform. 47
The isolation of taichunamides A—G (I)—(VII) and the elucidation of their structures are reported.
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::e88f2f6d0dfe922caaa8a05add0c5b7f
https://doi.org/10.1002/chin.201621222
https://doi.org/10.1002/chin.201621222