Zobrazeno 1 - 10
of 35
pro vyhledávání: '"Dimolybdenum tetraacetate"'
Autor:
Marcin Górecki, Jadwiga Frelek
Publikováno v:
Journal of Natural Products. 83:955-964
This critical appraisal is intended for users of the dimolybdenum method, well-established in electronic circular dichroism (ECD) to determine the absolute configuration of vic-diols and, in partic...
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::5b9ae8e19dd453914b60c26d33182168
https://doi.org/10.1021/acs.jnatprod.9b00800
https://doi.org/10.1021/acs.jnatprod.9b00800
Publikováno v:
Phytochemistry. 189:112818
Eight undescribed humulane-type sesquiterpenoids (xanthspinol A-E, I, J and N), three undescribed germacrane-type sesquiterpenoids (xanthspinol F, G and O) and twelve known compounds were isolated from the fruits of Xanthium spinosum. The structures
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::5c10f09ab732d9de7aaa4f7d82206f70
https://doi.org/10.1016/j.phytochem.2021.112818
https://doi.org/10.1016/j.phytochem.2021.112818
Publikováno v:
Chemistry of Natural Compounds. 53:483-485
A new compound, notoginsenoside ST-7 (1), and one known compound notoginsenoside ST-1 (2), were isolated from notoginseng medicinal fungal substance. The structure of the new compound was elucidated by combined analysis of the 1D and 2D NMR data, the
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::e119ee283a22d6c921ed1cad63c016de
https://doi.org/10.1007/s10600-017-2027-y
https://doi.org/10.1007/s10600-017-2027-y
Autor:
Chieh Hung Huang, Chih-Hua Chao, Ju-Chien Cheng, Shin-Hun Juang, Yu Ren Liao, Hsiu Hui Chan, De Yang Shen, Tian Shung Wu, Fu An Chen, Hung Cheng Shih, Hsin Yi Hung
Publikováno v:
RSC Advances. 5:41324-41331
The UV-guided isolation of polyacetylenes from the crude extract of Codonopsis pilosula has successfully led to the characterization of five new polyynes, pilosulynes A–E (1–5), and two new polyenes, pilosulynes F and G (6 and 7), as well as five
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::e511ea8859985fcdd25f9fc31f373b1d
https://doi.org/10.1039/c5ra02765a
https://doi.org/10.1039/c5ra02765a
Autor:
RackSeon Seong, Jae-Kuk Yoo, Ui-Jung Youn, Ik-Soo Lee, Hyun-Ju Jung, KiHwan Bae, HongJin Kim, Byung Sun Min
Publikováno v:
Bulletin of the Korean Chemical Society. 29:1839-1842
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::85de048d3f0ce6e162b0e251460750c4
https://doi.org/10.5012/bkcs.2008.29.9.1839
https://doi.org/10.5012/bkcs.2008.29.9.1839
Publikováno v:
The Journal of Organic Chemistry. 66:4819-4825
The method employing dimolybdenum tetraacetate for the assignment of the absolute configuration of optically active 1,2-diols is thoroughly revisited and applied to several compounds, some of which were synthesized by asymmetric cis-dihydroxylation.
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::11b85f88fa39911f06e6fdcaff0c8a1f
https://doi.org/10.1021/jo010136v
https://doi.org/10.1021/jo010136v
Publikováno v:
Inorganica Chimica Acta. 304:305-308
The reaction between lithium bis(trimethylsilyl)benzamidinate and dimolybdenum tetraacetate yields a mixture of two stereoisomers: trans - ( 2a ) and cis -Mo 2 (O 2 CCH 3 ) 2 [PhC(NSi(CH 3 ) 3 ) 2 ] 2 ( 2b ). While the acetates coordinate to the Mo 2
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::a2b45e743876a6f7ebeab1230333d298
https://doi.org/10.1016/s0020-1693(00)00096-7
https://doi.org/10.1016/s0020-1693(00)00096-7
Autor:
Wen-Jie Wang, Gui-Jie Zhang, Jing Qu, Hui Chen, Song Xu, Zhen-Feng Fang, Shuang-Gang Ma, Yang Liu, Shi-Shan Yu, Jian Bai
Publikováno v:
Planta medica. 79(2)
Four new abietane diterpenes ( 1 – 4 ) and two new cycloparvifloralone-type sesquiterpenoids ( 5 – 6 ) have been isolated from the twigs and leaves of Illicium majus , together with three known sesquiterpenoids and five known diterpenoids. Their
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::8ea4cd5271f916d217c920d154f921c8
https://pubmed.ncbi.nlm.nih.gov/23250809
https://pubmed.ncbi.nlm.nih.gov/23250809
Publikováno v:
Journal of Asian natural products research. 13(10)
Two new furan derivatives named pollenfurans A (1) and B (2) were isolated from the ethyl acetate extract of bee-collected rape pollen. Their structures were elucidated by spectroscopic analysis. The absolute configurations of the 6,7-diol moiety in
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::8e255e71d386dcd3d9d1149f8882dc79
https://pubmed.ncbi.nlm.nih.gov/21972808
https://pubmed.ncbi.nlm.nih.gov/21972808
Publikováno v:
Fresenius' Journal of Analytical Chemistry. 345:683-687
Bidentate complexes of dimolybdenum tetraacetate with 1,3-diaxial diols show Cotton effects around 490–540 nm (CD band I), 400–440 nm (II), 350–380 nm (III), 320 nm (IV) and 280 nm (V). The sign of the Cotton effect II can be predicted by a pro
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::504a6008d2554fdd68da4e7bf7d7fd1a
https://doi.org/10.1007/bf00325835
https://doi.org/10.1007/bf00325835