TY - JOUR
T1 - Absolute configuration of the (+)-calamenenes
T2 - crystal structure of 7-hydroxycalamenene
AU - Croft, Kevin D.
AU - Ghisalberti, Emilio L.
AU - Hocart, Charles H.
AU - Jefferies, Phillip R.
AU - Raston, Colin L.
AU - White, Allan H.
PY - 1978/1/1
Y1 - 1978/1/1
N2 - The sesquiterpenes 7-hydroxycalamenene and (+)-calamenene isolated from Eremophila drummondii have been interrelated. The crystal structure and absolute configuration of the p-bromobenzoate of 7-hydroxycalamenene, C22H25BrO2, has been determined; crystals are orthorhombic, space group P212121. unit cell dimensions a = 9.471(5). b = 11.469(5), c = 18.253(7) Å, for Z = 4. These results show that both sesquiterpenes have the (1R,4R) -configurations and resolve the present confusion on this point.
AB - The sesquiterpenes 7-hydroxycalamenene and (+)-calamenene isolated from Eremophila drummondii have been interrelated. The crystal structure and absolute configuration of the p-bromobenzoate of 7-hydroxycalamenene, C22H25BrO2, has been determined; crystals are orthorhombic, space group P212121. unit cell dimensions a = 9.471(5). b = 11.469(5), c = 18.253(7) Å, for Z = 4. These results show that both sesquiterpenes have the (1R,4R) -configurations and resolve the present confusion on this point.
UR - http://www.scopus.com/inward/record.url?scp=37049103902&partnerID=8YFLogxK
U2 - 10.1039/P19780001267
DO - 10.1039/P19780001267
M3 - Article
AN - SCOPUS:37049103902
SN - 1470-4358
SP - 1267
EP - 1270
JO - Journal of the Chemical Society, Perkin Transactions 1
JF - Journal of the Chemical Society, Perkin Transactions 1
IS - 10
ER -