This product is isolated and purified from the herbs of Artemisia sieberi
Soluble in Chloroform,Dichloromethane,Ethyl Acetate,DMSO,Acetone,etc.
336.7±25.0 °C at 760 mmHg
HS Code Reference
Personal Projective Equipment
For Reference Standard and R&D, Not for Human Use Directly.
provides coniferyl ferulate(CAS#:1911-78-0) MSDS, density, melting point, boiling point, structure, formula, molecular weight etc. Articles of coniferyl ferulate are included as well.>> amp version: coniferyl ferulate
The electronic circular dichroism (ECD) spectra of two sesquiterpenoids (1 and 2) related to oplopanone, obtained from a methanolic extract of the plant Serphidium stenocephalum (Artemisia stenocephala), were measured and reproduced by means of time-dependent density functional theory (TDDFT) calculations, establishing their absolute configuration. The application of ketone octant rule for carbonyl n-π* ECD band to compounds 1 and 2, which include an acyclic carbonyl group, was critically assessed. The peculiar oplopanone skeleton makes a straightforward application of the octant rule impossible, because of the uncertainty related to the shape of the so-called third nodal surface separating front and back octants. The various group contributions to the carbonyl n-π* ECD band were estimated with TDDFT calculations on selected molecular models obtained by consecutive dissections from 1.
© 2013 Wiley Periodicals, Inc.
TDDFT calculations; electronic circular dichroism; ketone octant rule; natural products; structure elucidation
Absolute configuration of oplopanone derivatives from Serphidium stenocephalum: ECD spectra of acyclic ketones with front-octant contributions.
Shafiq N1, Saleem M, Riaz N, Tousif MI, Jabbar A, Tareen RB, Pescitelli G