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Journal of Chinese Pharmaceutical Sciences ›› 2017, Vol. 26 ›› Issue (10): 754-762.DOI: 10.5246/jcps.2017.10.085

• Original articles • Previous Articles     Next Articles

Chemical constituents from the red alga Symphyocladia latiuscula

Weijie Guo, Guoliang Li, Yuxue Hou, Rongrong Wang, Yang Liu, Xiaohong Liu, Hua Gao, Wei Wang*   

  1. Department of Natural Medicine and Pharmacognosy, School of Pharmacy, Qingdao University, Qingdao 266021, China
  • Received:2017-06-12 Revised:2017-09-26 Online:2017-10-31 Published:2017-09-30
  • Contact: Tel.: +86-0532-82991172, E-mail: qddxwangwei@qdu.edu.cn
  • Supported by:
    National Natural Sciences Foundation of China (Grant No. 30672599).

Abstract:

The extraction and solvent fractionation of red alga Symphyocladia latiuscula, and repeated column chromatography led to isolation of 17 compounds: cholesterol (1), 3β,5β-dihydroxy-B-norcholestan-6β-carboxaldehyde(2),6β-hydroxy-cholest-4-ene-3-one(3), 1-O-myristoyl-3-O-(6′-sulfo-α-D-quinovopyranosyl)glycerol (4), 1-O-palmitoyl-3-O-(6′-sulfo-α-D-quinovopyranosyl)glycerol (5), 1-O-palmitoyl-3-O-[α–D-galactopyranosyl(1→6)β-D-galactopyranosyl] glycerol(6), 1-O-palmitoyl-3-O-β-D-galactopyranosylglycerol (7), methyl hexadecanoate (8), methyl stearate(9), hexadecanoic acid (10), γ-n-butyl cis-aconiate (11), α-n-Butyl cis-aconiate (12), phenethylamine (13),3,5-dibromo-L-tyrosine (14), 3-methylbutylamine (15),methyl pyroglutamate (16),n-butyl pyroglutamate (17).The structures of these compounds were identified by NMR spectroscopy and mass spectrometry, and compared with those reported in the literature. All the compounds were isolated from Symphyocladia genus for the first time.These compounds were investigated for their inhibitory effects on human recombinant aldose reductase in vitro. Of the compounds, 1-O-palmitoyl-3-O-β-D-galactopyranosylglycerol (7) demonstrated moderate enzyme inhibition.

Key words: Symphyocladia latiuscila, Sterols, Glycolipids, Aldose reductase

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