Biebsanin — A new susquiterpene lactone fromAchillea biebersteinii andA. santolina
Continuing a study of the lactones of Achillea biebersteinii [i] and A. santolina, from the mother liquors [2, 3] by means of the systems chloroform-ethanol (30:1) and benzene--ethyl acetate (1:1) we have isolated a new chlorine-containing sesquiterpene lactone with the composition C15HzgO~CI (ethyl acetate), mp 258-259°C (in a preheated metal block), [u]~ ° --34 ° (c 1.0; pyridine), M + 330, which we have called biebsanin (I).
Rupicolin-A and -B, rupin-A and -B, and cumambrin-B oxide from Artemisia tripartita ssp. Rupicola
Abstract Five new sesquiterpene Iactones have been isolated from Artemisia tripartita Rydb. ssp. rupicola Beetle. The compounds, all guaianolides, are structurally related in what appears to be a sequence in which epoxidation plays the principal role.
Impact of acetaldehyde‐ and pyruvic acid‐bound sulphur dioxide on wine lactic acid bacteria
Aims:  To investigate the impact of acetaldehyde‐ and pyruvic acid‐bound sulphur dioxide on wine lactic acid bacteria (LAB).