Unambiguous 13C NMR assignment of acnistins and absolute configuration of acnistin A.
Carbon and proton atoms were fully assigned in this new type of withanolide by HMQC and HMBC experiments. The absolute configuration of acnistin A was determined by X-ray diffraction. Proton and 13C NMR measurements are particularly useful in identifying members of this group of natural products.
Gutiérrez Luis
J
J
Instituto de Bioorgánica, Centro de Productos Naturales Orgánicos Antonio Gonzalez, Universidad de La Laguna, Tenerife, Canary Island, Spain.
Echeverri
F
F
Quiñones
W
W
González
A G
AG
Torres
F
F
Cardona
G
G
Archbold
R
R
Rojas
M
M
Perales
A
A
D000736:Androstenes / Q000737:chemistry*; D018360:Crystallography, X-Ray; D009682:Magnetic Resonance Spectroscopy; D008968:Molecular Conformation; D015394:Molecular Structure
D000736:Androstenes; C089050:acnistin A