Publication: Chemistry and crystal structures of some constituents of zingiber cassumunar
Issued Date
1979-01-01
Resource Type
ISSN
14450038
00049425
00049425
Other identifier(s)
2-s2.0-0002280542
Rights
Mahidol University
Rights Holder(s)
SCOPUS
Bibliographic Citation
Australian Journal of Chemistry. Vol.32, No.1 (1979), 71-88
Suggested Citation
Thanomwang Amatayakul, Jack R. Cannon, Pimchit Dampawan, Thaweephol Dechatiwongse, Robin G.F. Giles, Charus Huntrakul, Kosan Kusamran, Mongkol Mokkhasamit, Colin L. Rastton, Vichai Reutrakul, Allan H. White Chemistry and crystal structures of some constituents of zingiber cassumunar. Australian Journal of Chemistry. Vol.32, No.1 (1979), 71-88. doi:10.1071/CH9790071 Retrieved from: https://repository.li.mahidol.ac.th/handle/20.500.14594/13173
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Title
Chemistry and crystal structures of some constituents of zingiber cassumunar
Abstract
The novel aromatic compounds cis-3-(2′, 4′, 5′-trimethoxyphenyl)-4-[(E)-2"′, 4′, 5"′-trimethoxy-styryl]cyclohex-1-ene (1), cis-3-(3′, 4′-dimethoxyphenyl)-4-[(E)-3"′, 4′"-dimethoxystyryl] cyclohex-l-ene (2), a substance assigned the tentative structure cis-3-(3′, 4′-dimethoxyphenyl)-4-[(E)-2"′, 4′", 5′"-trimethoxystyryl]cyclohex-1-ene (3), (E)-4-(3′, 4′-dimethoxypheny1)but-3-en-1-ol (5), (E)-4-(3′, 4′-di-methoxypheny1)but-3-en-1-yl acetate (6), and 8-(3′, 4′-dimethoxypheny1)-2-methoxynaphtho-1, 4-quinone (7) have been isolated from the rhizomes of Zingiber cassurnunav Roxb. (Zingiberaceae). The crystal structures of the cyclohexene derivative (1) and the quinone (7) have been determined from X-ray diffractometer data at 295 K and refined by block diagonal least squares to residuals of 0.046 (2099 ′observed′ reflections) and 0.093 (1246), respectively. Crystals of compound (1) are triclinic, P ī, a 18.027(12), b 10.037(9), c 6.530(5) Å, α 84.22 (7), ß 81-87 (6), γ 85.72 (6)°, Z 2. Crystals of the quinone (7) are monoclinic, P 2 1 /a, a 22.89 (1), b 8.022 (5), c 8.458 (5) Å, ß 91.98 (5)°, Z 4. Although the latter crystal structure determination is imprecise, due largely to the very small size of the crystal available, the solution is unambiguous. A simple two-step synthesis of the quinone (7) has been achieved. © 1979 Australian Journal of Chemistry, All rights reserved.