Structure of Heliangine, a Novel Ten-membered Sesquiterpene Lactone

4,5-seco-guaiane and a nine-membered sesquiterpene lactone from Holostylis reniformis.

Root extracts of Holostylis reniformis (Aristolochiaceae) yielded three new natural sesquiterpenes, a sesquiterpene with an unusual carbon skeleton, 4,5-seco-guaiane (7-epi-11-hydroxychabrolidione A, 1), a nine-membered lactone with new carbon skeleton (holostylactone, 2), and a new megastigmane [(6S,7E)-6,9-dihydroxy-10-(2'-hydroxy-ethoxy)-4,7-megastigmadien-3-one, 3], together with bulnesol a...

The Antiinflammatory Sesquiterpene Lactone

Novel Sesquiterpene Lactone and Sesquiterpene Lactone Glucoside from the Flowers of the Tunisian Pulicaria Laciniata (coss. Et Kral.) Thell

* corresponding author, e-mail : [email protected] Abstract: A sesquiterpene lactone 1 Lacinin and a sesquiterpene lactone glucoside 2 Laciniside, were isolated from the flowers of Pulicaria laciniata. Their structures were elucidated by extensive spectroscopic methods including 1D-( 1 H and 13 C) and 2D-NMR experiments, (CHcorr, HMBC, 1 H1 H COSY and NOESY) as well as high resolution E...

Aromaticine, a sesquiterpene lactone from Amblyopappus pusillus

AROMATICINE (SYSTEMATIC NAME: 4a,8-dimethyl-3-methyl-ene-3,3a,4,4a,7a,8,9,9a-octa-hydro-azuleno[6,5-b]furan-2,5-dione), C(15)H(18)O(3), is a natural lactone isolated from Amblyopappus pusillus. The mol-ecular structure and conformation agree with the results of Romo, Joseph-Nathan & Díaz [(1964 ▶). Tetra-hedron, 20, 79-85]. The fused-ring system contains a seven-membered ring in a twist-boat co...

Cynaratriol, a sesquiterpene lactone from Centaurea musimomum

THE TITLE COMPOUND [SYSTEMATIC NAME: 3,8-dihydr-oxy-3-(hydroxy-meth-yl)-9-methyl-6-methyl-enedeca-hydro-azuleno[4,5-b]furan-2(3H)-one], C(15)H(22)O(5), is a sesquiterpene lactone showing the typical tricyclic guaianolide skeleton which has been isolated, together with other related metabolites, from the plant Centaurea musimomum. The present study confirms the mol-ecular structure, assigned by ...