CAS Registry Number: 851595-64-7 Open image in new window

Taxonomy: Physicochemical and Pharmacological Properties of Sesquiterpene Esters – The Monocyclic Sesquiterpene Esters – Germacranes – Germacranes – Diesters

Biological sources: Pulicaria canariensis Bolle. subsp. canariensis [1]

C₁₉H₂₈O₆: 352.1886

Mp: amorphous solid [1]

[α]_D²⁵ 21.4° (c 0.014, CHCl₃) [1]

UV (EtOH): 206 (3.2), 250 (2.3), 273 (1.8) [1]

IR (KBr): 3067, 2937, 1731, 1693, 1554, 1430, 1372, 1245, 1023, 960 [1]

EI-MS: 352 [M]⁺ (1), 316 (1), 292 (1), 281 (0.5), 274 (1), 250 (12), 233 (15), 232 (66), 217 (24), 203 (12), 189 (100), 187 (41), 176 (16), 171 (17), 161 (19), 145 (89), 143 (44), 131 (40), 123 (56), 105 (34), 91 (49), 81 (42), 69 (30), 55 (30) [1]

HR-EI-MS: 352.1877 [M]⁺ (calc. for C₁₉H₂₈O₆: 352.1886) [1]

¹H NMR: 0.97 (3H, d, J = 4.5, H-13), 1.06 (3H, d, J = 5.6, H-12), 1.80 (1H, m, H-7), 1.80 and 2.10 (2H, m, H-3), 1.84 (3H, s, H-15), 2.00 (3H, s, OAc), 2.05 (3H, s, OAc), 2.10 (1H, m, H-11), 2.10 and 2.35...