Zobrazeno 1 - 10
of 84
pro vyhledávání: '"Lolita O. Zamir"'
Autor:
Mei Dong, Qing-Wen Shi, Yu-Cheng Gu, Bin Cong, Françoise Sauriol, Shu‐Hong Yu, Lolita O. Zamir, Hiromasa Kiyota, Chang Hong Huo
Publikováno v:
Organic Letters. 10:701-704
Echinopines A (1) and B (2), novel sesquiterpenoids with an unprecedented rearranged skeleton named echinopane, were isolated from the roots of Echinops spinosus. The structures were elucidated by extensive spectroscopic analysis. The relative config
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::057a86371884d4e1757982f0b6d85c10
https://doi.org/10.1021/ol702629z
https://doi.org/10.1021/ol702629z
Publikováno v:
Phytochemistry. 65:3097-3106
Five taxanes with an amino-side chain on C-5 were identified for the first time in the needles of the Canadian yew, Taxus canadensis. Their structures were characterized as 2alpha,7beta,9alpha,10beta,13-pentaacetoxy-11beta-hydroxy-5alpha-(3'-N,N-dime
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::25cf7ca0d128c417a392b38866785d67
https://doi.org/10.1016/j.phytochem.2004.08.042
https://doi.org/10.1016/j.phytochem.2004.08.042
Publikováno v:
Tetrahedron Letters. 43:6869-6873
A novel minor metabolite 1 with an unprecedented skeleton was isolated from the needles of Taxus canadensis. A biogenesis from taxinine an abundant taxane is proposed. This is the first example of a taxane with a 6/6/8/6-membered ring skeleton.
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::54bf019291d106eb78d3888fd62ef142
https://doi.org/10.1016/s0040-4039(02)01535-6
https://doi.org/10.1016/s0040-4039(02)01535-6
Publikováno v:
Canadian Journal of Chemistry. 79:1381-1393
Reanalysis of the biotransformation of 4(20),11(12)-taxadiene derivatives by Absidia coerulea ATCC 10738a unravelled additional unprecedented rearrangement reactions. 5α,7β,9α,10β,13α-pentaacetoxy-4(20),11(12)-taxadiene (1) was converted to 10 n
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::61aa9c86934eb88f7721da397d8d4c35
https://doi.org/10.1139/v01-125
https://doi.org/10.1139/v01-125
Publikováno v:
Bioorganic & Medicinal Chemistry. 9:1985-1992
5alpha, 7beta, 9alpha, 10beta, 13alpha-Pentahydroxy-4(20),11(12)-taxadiene derivative 1 was converted to two unprecedented 1(15--11)abeo-taxanes and a taxane derivative with a C10-C11 double bond by Absidia coerula ATCC 10738a. A similar compound was
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::5a848a5e81a759d5acfb2827d713d801
https://doi.org/10.1016/s0968-0896(01)00106-7
https://doi.org/10.1016/s0968-0896(01)00106-7
Autor:
Xiao-Li You, Francoise Sauriol, Orval Mamer, Moulay Alaoui-Jamali, Junzeng Zhang, Lolita O. Zamir, Gerald Batist
Publikováno v:
Journal of Natural Products. 64:450-455
Eight minor taxanes have been identified for the first time in Taxus canadensis needles. Four of these metabolites are new taxane analogues: 7-acetyl-10-deacetyltaxol (1), 2'-acetyl-7-epi-cephalomannine (2), 10-deacetyl-10-oxo-7-epi-cephalomannine (3
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::74b672a297dad244e19c358b8aa4fc77
https://doi.org/10.1021/np0004449
https://doi.org/10.1021/np0004449
Autor:
Alice D. Cherestes, Gaétan Caron, Anastasia Nikolakakis, Lolita O. Zamir, Orval A. Mamer, Francoise Sauriol
Publikováno v:
Bioorganic & Medicinal Chemistry. 8:1269-1280
An efficient conversion of Taxus canadensis abundant taxane, 9-dihydro-13-acetylbaccatin III to baccatin III is described. Since the synthesis of paclitaxel from baccatin III has been reported, this work can be used for additional supply of this powe
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::a28fa0747fda607db4b5ee579c2370c8
https://doi.org/10.1016/s0968-0896(00)00056-0
https://doi.org/10.1016/s0968-0896(00)00056-0
Autor:
Lolita O. Zamir, Carole Abi Farah
Publikováno v:
Canadian Journal of Microbiology. 46:143-149
Fusarium spp. are ubiquitous fungi infecting cereals and grains, and therefore constitute a major problem for agriculture. Their trichothecene metabolites, and in particular deoxynivalenol and its 3-acetylated derivative, are the mycotoxins involved.
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::dc8dd9834496e566a5f14bb614c2e9a7
https://doi.org/10.1139/w99-116
https://doi.org/10.1139/w99-116
Publikováno v:
Tetrahedron. 55:14323-14340
Nineteen taxanes were characterized for the first time in the needles of the Canadian yew. Four of these metabolites are novel: taxinine-11, 12-oxide (1), 7-acetoxytaxuspine C (2), 5-cinnamoyltaxin B (3), and 7, 9-deacetyltaxinine B (4). Compound 1 i
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::e47195a24fcdaf8c7dc4cfbdbb1d1aa1
https://doi.org/10.1016/s0040-4020(99)00930-8
https://doi.org/10.1016/s0040-4020(99)00930-8
Autor:
Anastasia Nikolakakis, Orval A. Mamer, Alice D. Cherestes, Françoise Sauriol, Lolita O. Zamir
Publikováno v:
Tetrahedron Letters. 40:7917-7920
The rearrangement of 9-dihydro-13-acetylbaccatin III, the major taxane from Taxus canadensis, has been studied. Two new cyclization products as well as one novel degradation compound are reported. Their structures were determined by spectroscopic tec
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::cca2c6e1eee4a4575f7826844bde4031
https://doi.org/10.1016/s0040-4039(99)01577-4
https://doi.org/10.1016/s0040-4039(99)01577-4