29868-52-8Relevant academic research and scientific papers
Sesquiterpenes from the essential oil of the liverwort Conocephalum conicum
Melching, Stephanie,Koenig, Wilfried A.
, p. 517 - 523 (2007/10/03)
Three new brasilane type sesquiterpenes related to the known alcohol conocephalenol and the sesquiterpene alcohol presilphiperfolan-1-ol were isolated from a chemotype of the liverwort Conocephalum conicum collected in southern Germany and identified by NMR investigations, enantioselective gas chromatography and chemical correlations. In addition ent-(-)-dactylol, the enantiomer of a compound so far only found as a constituent of the Caribbean sea hare Aplysia dactylomela, was identified.
Structures and spasmolytic activities of derivatives from sesquiterpenes of Alpinia speciosa and Alpinia japonica
Morita, Makoto,Nakanishi, Hiroshi,Morita, Hiroshi,Mihashi, Susumu,Itokawa, Hideji
, p. 1603 - 1606 (2007/10/03)
Sesquiterpenes isolated from Alpinia speciosa and Alpinia japonica, and their derivatives were found to inhibit histamine- or barium chloride- induced contraction of excised guinea pig ileum when tested by the Magnus method. Major spasmolytic principles contained in those extracts were the sesquiterpenes, β-eudesmol, nerolidol, humulene epoxide II and 4α- hydroxydihydroagarofuran. Relationships between the chemical structures of the sesquiterpenes and their derivatives, and their spasmolytic activities were discussed.
EUDESMANE GLYCOSIDES FROM CARTHAMUS LANATUS
Feliciano, Arturo San,Medarde, Manuel,Rey, Benedicto Del,Corral, Jose M. Miguel Del,Barrero, Alejandro F.
, p. 3207 - 3211 (2007/10/02)
Two new eudesmane glycosides, intermedeol β-D-fucopyranoside and its 2'α-methylbutyrate, were isolated from the hexane extract of Carthamus lanatus and their structures established by spectral and chemical means.
BIOMIMETIC CYCLIZATION OF HEDYCARYOL DERIVATIVES. UNEXPECTED CYCLIZATION OF PHENYL SULFIDES WITH METHYL IODIDE
Kodama, Mitsuaki,Shimada, Kazuaki,Ito, Sho
, p. 1523 - 1526 (2007/10/02)
Four isomeric hedycaryol phenyl sulfides, when reacted with MeI, yielded eudesmol derivatives with different stereochemistry from that of the acid cyclization products of the corresponding hedycaryols.New stereoisomers of α- and β-eudesmols, β-dehydroparadisiol and a defensive substance of termite were synthesized.Nephthenol phenyl sulfide yielded a 14-membered tetraene.
