TERPENOIDS FROM SIDERITIS VAROI SUBSP. ORIENSIS

Article abstract of DOI:10.1016/0031-9422(86)80084-X

Key Word Index - Sideritis varoi subsp. oriensis; Labiatae; eudesmanes. From the aerial parts of Sideritis varoi subsp. oriensis the previously known 1β-hydroxy-6β-acetoxyeudesm-4(15)-ene, 1β-hydroxy-6B-acetoxyeudesm-3-ene, 1β-hydroxy-6β-acetoxyeudesm-4-ene, 1β,4β-dihydroxy-6β-acetoxyeudesmane and the new 1β,4α-dihydroxy-6β-acetoxyeudesmane, as wel as the ent-8α-hydroxylabda-13(16),14-dienes 6-deoxyandalusoic acid, 6-deoxyandalusal, 6-deoxyandalusol, 18-deoxyandalusol, andalusol, the ent-13-epi-manoyl oxide varodiol and the ent-kaur-15-ene sideridiol were isolated.The stereochemistry at C-4 of the isolated eudesmanes, which has been under discussion for other similar compounds, was elucidated by chemical and spectroscopic means.