
%0 Journal Article
%A Amatayakul, T 
%A Cannon, J 
%A Dampawan, P 
%A Dechatiwongse, T 
%A Giles, RF 
%A Huntrakul, C 
%A Kusamran, K 
%A Mokkhasamit, M 
%A Raston, C 
%A Reutrakul, V 
%A White, A 
%T Chemistry and Crystal Structures of Some Constituents of <I>Zingiber cassumunar</I>
%J Australian Journal of Chemistry
%D 1979/01/01
%V 32
%N 1
%P 71-88
%K 
%R https://doi.org/10.1071/CH9790071
%U https://www.publish.csiro.au/paper/CH9790071 
%X 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-1-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'-dimethoxypheny1)but-3-en-1-yl acetate (6), and 8-(3',4'-dimethoxyphenyl)-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, P1, a 18.027(12), b 10.037(9), c 6.530(5) &#945;, 84.22 (7), &#946; 81.87 (6), &#947; 85.72 (6)º, Z 2. Crystals of the quinone (7) are monoclinic, P21/a, a 22.89 (1), b 8.022 (5), c 8.458 (5) Å, &#946; 91.98 (5)º, 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. 
