Sains Malaysiana 54(5)(2025): 1345-1355 
            
          
          http://doi.org/10.17576/jsm-2025-5405-12
            
          
          
             
          
          Oligostilbenoids and Phenolic Compounds from the Stem Bark of Shorea materialis RIDL. (Dipterocarpaceae)
            
          
          (Oligostilbenoid dan Sebatian Fenol daripada Kulit Batang Shorea materialis RIDL. (Dipterocarpaceae)) 
            
          
          
             
          
          MUHAMMAD SULAIMAN MOHD JOHARI1,2, NIK
            FATINI NIK AZMIN1, WAN AZMIZA SYAHIRA WAN AZHAR1, SITI
            ZAKIRAH AZAHAR1,2, NOORAZLINA ADNAN1,2,3, NURUL SHAHIRA ZAKARIA1, FATIMAH SALIM1,2, NORIZAN
            AHMAT3 & AISYAH SALIHAH KAMAROZAMAN2,3,*
  
          
             
          
          1Faculty of Applied Sciences, Universiti Teknologi MARA, 40450
            Shah Alam, Selangor, Malaysia
            
          
          2Atta-ur-Rahman Institute for Natural
            Product Discovery, Universiti Teknologi MARA, Cawangan Selangor, Kampus Puncak Alam, 42300 Bandar Puncak Alam, Selangor, Malaysia
  
          
          3Centre of Foundation Studies, Universiti Teknologi MARA, Cawangan Selangor, Kampus Dengkil, 43800 Dengkil, Selangor,
            Malaysia
            
          
          
             
          
          Diserahkan: 25 April 2024/Diterima: 24 Februari 2025
            
          
          
             
          
          Abstract
            
          
          The Shorea genus is known for its abundance of
            sources of oligostilbenoids, which exhibit diverse
            biological functions. Nevertheless, despite its considerable potential, there
            remains a dearth of phytochemical investigations including Shorea materialis. Consequently, this study aims to
            isolate the chemical constituents from the stem bark of this species. The crude
            extract of S. materialis was obtained from the
            maceration technique and fractionation using vacuum liquid chromatography. The
            resulting fractions were further purified via column chromatography. The
            molecular structures of the isolated molecules were determined using various
            spectroscopic techniques. Two dimer stilbenoids, ampelopsins A (1)
            and D (2), three trimers, namely
  α-viniferin (3), hopeanolin (4) and davidiol A (5), one tetramer, vaticanol B (6),
            together with two phenolic compounds, p-hydroxybenzaldehyde and (7)
              2,3,5-trihydroxybenzoic acid (8) were
                effectively isolated. The isolation of these compounds was the first report
                from this species.
  
          Keywords: Dipterocarpaceae; oligostilbenoids; phenolic compounds; Shorea materialis    
            
          
          
             
          
          Abstrak
            
          
          Genus Shorea terkenal dengan kekayaan sumber oligostilbenoid yang menunjukkan pelbagai fungsi biologi. Walaupun genus ini mempunyai potensi yang tinggi, kajian fitokimia berkaitan spesies daripada genus ini masih sedikit termasuklah Shorea materialis.
            Oleh itu, kajian ini dijalankan bertujuan untuk mengasingkan sebatian kimia daripada kulit batang spesies ini. Ekstrak kasar S. materialis diperoleh daripada kaedah rendaman dan fraksinasi menggunakan kromatografi cecair vakum. Fraksi yang diperoleh seterusnya ditulenkan lagi menggunakan kromatografi turus. Struktur molekul sebatian yang telah dipencilkan ditentukan menggunakan pelbagai teknik spektroskopi. Dua sebatian stilbenoid dimer, ampelopsin A (1)
            dan D (2), tiga stilbenoid trimer, iaitu α-viniferin (3), hopeanolin (4) dan davidiol A (5), satu stilbenoid tetramer, vaticanol B (6), bersama dengan dua sebatian fenol, p-hidroksibenzaldehid dan (7) asid benzoik 2,3,5-trihidroksi (8) telah berjaya dipencilkan. Penulenan sebatian ini merupakan pertama kali dilaporkan daripada spesies ini.
  
          
          Kata kunci: Dipterocarpaceae; oligostilbenoid; sebatian fenol; Shorea materialis  
            
          
          
             
          
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          *Pengarang untuk surat-menyurat; email:
            aisyah2910@uitm.edu.my