Bougainvinones N-P, three new flavonoids from Bougainvillea spectabilis was written by Nguyen, Tuyet T. A.;Nguyen, Hai L.;Pham, Tuyen N. K.;Nguyen, Phung K. P.;Huynh, Tuyet T. N.;Sichaem, Jirapast;Do, Lien T. M.. And the article was included in Fitoterapia in 2021.HPLC of Formula: 33171-05-0 The following contents are mentioned in the article:
In an effort to identify natural bioactive compounds, three new flavonoids (1-3) and six known compounds (4-9) were isolated from the stem bark of Bougainvillea spectabilis. The structures of these compounds were accomplished using comprehensive spectroscopic methods, including 1D and 2D NMR spectra with references to the literatures, as well as high-resolution mass spectrometric anal. Their cytotoxicity against KB and HeLa S-3 cell lines was also evaluated. This study involved multiple reactions and reactants, such as Bisdemethoxycurcumin (cas: 33171-05-0HPLC of Formula: 33171-05-0).
Bisdemethoxycurcumin (cas: 33171-05-0) belongs to ethers. Carboxylic acid esters of low molecular weight are colourless, volatile liquids with pleasant odours, slightly soluble in water. Many esters have the potential for conformational isomerism, but they tend to adopt an s-cis (or Z) conformation rather than the s-trans (or E) alternative, due to a combination of hyperconjugation and dipole minimization effects. The preference for the Z conformation is influenced by the nature of the substituents and solvent, if present. Lactones with small rings are restricted to the s-trans (i.e. E) conformation due to their cyclic structure.HPLC of Formula: 33171-05-0
Referemce:
Ether – Wikipedia,
Ether | (C2H5)2O – PubChem