scholarly journals Phenylspirodrimane Derivatives From Cultures of the Fungus Stachybotrys chartarum YIM DT 10079

2019 ◽  
Vol 14 (10) ◽  
pp. 1934578X1987890
Author(s):  
Zhang-Gui Ding ◽  
Jian-Hai Ding ◽  
Jiang-Yuan Zhao ◽  
Ming-Gang Li ◽  
Dong-Bao Hu ◽  
...  
Keyword(s):  
Secondary Metabolites ◽  
Quantum Chemical Calculations ◽  
Absolute Configuration ◽  
Mine Tailings ◽  
Quantum Chemical ◽  
Stachybotrys Chartarum ◽  
Circular Dichroism Spectra ◽  
Electronic Circular Dichroism ◽  
Spectroscopic Analyses ◽  
Circular Dichroïsm

A new phenylspirodrimane derivative, stachartin F (1), and 2 known secondary metabolites stachybonoid E (2) and stachybonoid F (3) were isolated from cultures of the tin mine tailings-associated fungus Stachybotrys chartarum YIM DT 10079. Their structures were determined with the help of extensive spectroscopic analyses and absolute configuration of compound 1 was rationalized by quantum chemical calculations of the electronic circular dichroism spectra.

Quantum-chemical calculations on the electronic circular dichroism of (−)-dibromophakellin and (−)-dibromophakell-statin

Chirality ◽  
2007 ◽  
Vol 19 (7) ◽  
pp. 542-549 ◽  
Author(s):  
Iuliana Atodiresei ◽  
Michael Zöllinger ◽  
Thomas Lindel ◽  
Jörg Fleischhauer ◽  
Gerhard Raabe
Keyword(s):  
Circular Dichroism ◽  
Quantum Chemical Calculations ◽  
Quantum Chemical ◽  
Electronic Circular Dichroism ◽  
Circular Dichroïsm

scholarly journals Absolute configuration of a [1]rotaxane determined from vibrational and electronic circular dichroism spectra

Chirality ◽  
2021 ◽  
Author(s):  
Andrew R. Puente ◽  
Adrien Bessaguet ◽  
Noël Pairault ◽  
Grégory Pieters ◽  
Jeanne Crassous ◽  
...  
Keyword(s):  
Circular Dichroism ◽  
Absolute Configuration ◽  
Circular Dichroism Spectra ◽  
Electronic Circular Dichroism ◽  
Circular Dichroïsm

scholarly journals Aspidoptoids A–D: Four New Diterpenoids from Aspidopterys obcordata Vine

Molecules ◽  
2020 ◽  
Vol 25 (3) ◽  
pp. 529
Author(s):  
Sun ◽  
Cao ◽  
Xiao ◽  
Zhang ◽  
Wang ◽  
...  
Keyword(s):  
Nitric Oxide ◽  
Circular Dichroism ◽  
Absolute Configuration ◽  
2D Nmr ◽  
Cytotoxic Activities ◽  
No Production ◽  
Inhibitory Effects ◽  
Electronic Circular Dichroism ◽  
Spectroscopic Analyses ◽  
Circular Dichroïsm

Four new diterpenoids, named aspidoptoids A–D (1–4), together with two known analogues (5–6) were isolated from Aspidopterys obcordata vine. Aspidoptoids A–B (1–2) are the first examples of phenylethylene-bearing 20-nor-diterpenoids of which aspidoptoid B (2) possesses a rare 3,10-oxybridge. Their structures and absolute configuration were determined by extensive spectroscopic analyses (IR, HRESIMS, 1D and 2D NMR) and electronic circular dichroism (ECD) calculation. In addition, all the isolates were evaluated for their cytotoxic activities and inhibitory effects on the nitric oxide (NO) production.

scholarly journals A New Diterpenoid with a Rearranged Skeleton from Salvia prattii

2017 ◽  
Vol 12 (8) ◽  
pp. 1934578X1701200
Author(s):  
Hiroshi Kawabe ◽  
Riyo Suzuki ◽  
Hiroshi Hirota ◽  
Keiichi Matsuzaki ◽  
Xun Gong ◽  
...  
Keyword(s):  
Circular Dichroism ◽  
Hela Cell ◽  
Cell Lines ◽  
Absolute Configuration ◽  
Electronic Circular Dichroism ◽  
Methyl Group ◽  
Spectroscopic Analyses ◽  
Hela Cell Lines ◽  
The Absolute ◽  
Circular Dichroïsm

A new diterpenoid with a rearranged skeleton, prattinin A (1), was isolated along with five known compounds (2–6) from the roots of Salvia prattii. The structure of 1 bearing a methyl group at the C-5 position was established by extensive spectroscopic analyses and the absolute configuration of 1 was elucidated by comparing the calculated and experimental electronic circular dichroism (ECD) spectra. Compounds 1, 3, 4, and 5 exhibited moderate or weak cytotoxicity against HL-60 and HeLa cell lines.

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