Reisolation and Structure Revision of Asperspiropene A.
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DOI: 10.1021/acs.jnatprod.1c00288
Abstract: Asperspiropene A was originally reported to have a unique 1,8-dioxaspiro[4.5]decane skeleton. During the course of our ongoing research for novel marine natural products, we isolated compound 1, which has identical 1D and 2D NMR data… read more here.
Keywords: structure revision; revision asperspiropene; reisolation structure; structure ... See more keywords
Structure Revision of Balsamisides A-D and Establishment of an Empirical Rule for Distinguishing Four Classes of Biflavonoids.
Sign Up to like & getrecommendations! Published in 2022 at "Journal of natural products"
DOI: 10.1021/acs.jnatprod.2c00694
Abstract: Balsamisides A-D (1-4) are anti-inflammatory and neurotrophic biflavonoidal glycosides originally proposed to possess an epoxide functionality at the C-2/C-3 position. However, there are inconsistencies in their 13C NMR chemical shift values with those of previously… read more here.
Keywords: classes biflavonoids; structure revision; empirical rule; 13c nmr ... See more keywords
Structure Revision of the Sesquiterpene Nordine Based on NMR Spectroscopic Analysis and X-ray Crystallography.
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DOI: 10.1021/acs.jnatprod.2c00828
Abstract: Nordine was reported to be an unusual humulene-type macrocyclic sesquiterpenoid that contains an ether-bridged bicyclic ring between C-10 and C-6 with a hydroxy group at position 2. Here, we report the structure revision of nordine… read more here.
Keywords: structure; nordine; structure revision; spectroscopic analysis ... See more keywords
Synthesis, Structure Revision, and Cytotoxicity of Nocarbenzoxazole G.
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DOI: 10.1021/acs.jnatprod.9b00072
Abstract: The total synthesis of nocarbenzoxazoles F (1) and G (2), originally obtained from the marine-derived halophilic bacterial strain Nocardiopsis lucentensis DSM 44048, was achieved via a simple and versatile route involving microwave-assisted construction of a… read more here.
Keywords: structure revision; revision cytotoxicity; synthesis structure; structure ... See more keywords
Structure revision of cryptosporioptides and determination of the genetic basis for dimeric xanthone biosynthesis in fungi† †Electronic supplementary information (ESI) available. See DOI: 10.1039/c8sc05126g
Sign Up to like & getrecommendations! Published in 2019 at "Chemical Science"
DOI: 10.1039/c8sc05126g
Abstract: Three novel dimeric xanthones, cryptosporioptides A–C were isolated from Cryptosporiopsis sp. 8999 and their structures elucidated. read more here.
Keywords: revision cryptosporioptides; genetic basis; structure revision; cryptosporioptides determination ... See more keywords
Synthesis and DFT-NMR-guided structure revision of cremenolide
Sign Up to like & getrecommendations! Published in 2022 at "Natural Product Research"
DOI: 10.1080/14786419.2021.2023867
Abstract: Abstract The structure of an anti-plant pathogenic and plant growth-promoting nonenolide, namely cremenolide, was revised by an efficient combination of DFT-based theoretical NMR calculations and synthesis of a target diastereomer. Initially, the planar structure of… read more here.
Keywords: structure; dft nmr; nmr guided; structure revision ... See more keywords