CJCU

Chem. J. Chinese Universities ›› 1996, Vol. 17 ›› Issue (2): 249.

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Studies on the Chemical Constituents of Laurencia Karlae Collected from the South China Sea

ZHONG Yong-Li, SU Jing-Yu, ZENG Long-Mei, YAN Su-Jun, LUO Bing-Hao   

  1. Department of Chemistry, Zhongshan University, Guangzhou 510275
  • Received:1995-01-02 Online:1996-02-24 Published:1996-02-24

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Abstract: Anew n-hexadecyl-β-D-xylopyranoside(1) and a known compound cholest-5-en-3β-ol(2),were isolated from the red alga Laurencia karlae Zhang et Xia collected from the Nashan Islands in the South China Sea.Compound 1 is a white solid,C21H42O5,m.p.94.0～95.0℃,[a]D=-25.0℃(CHCl3,c 0.032).The structure of 1 was determined on the basis of elemental analysis,IR, MS,1H NMR,13C NMR,(DEPT),and 13C NMRdata in comparison with the known compounds.

Key words: Red alga, Laurencia karlae Zhang et Xia, Xyloside, n-Hexadcyl-β-D-xylopyranoside, Cholest-5-en-3β-ol

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