Sains Malaysiana 46(8)(2017): 1285–1288

http://dx.doi.org/10.17576/jsm-2017-4608-14

 

New Chemical Constituent from the Rhizomes of Johannesteijsmannia altifrons

(Juzuk Kimia Baru daripada Akar Johannesteijsmannia altifrons)

 

NOOR AZIIRAA SABRI*, W.A. YAACOB & NUR SHAFIQA ABDULLAH

 

School of Chemical Sciences and Food Technology, Faculty of Science and Technology, Universiti Kebangsaan Malaysia, 43600 UKM Bangi, Selangor, Darul Ehsan, Malaysia

 

Diserahkan: 17 Mei 2016/Diterima: 8 Februari 2017

 

 

ABSTRACT

A new compound namely 2-[(1′E)-3′-hydroxyl-1′-methyl-1′-propen-1′-yl]-6-methoxy-7-[(2′′-methylheptyl)oxy]-5-benzofurancarboxylic acid and three known compounds of β-sitosterol, γ-taraxasterol and stigmasterol were isolated from the n-hexane extracts of the rhizomes and fruits of Johannesteijsmannia altifrons using vacuum liquid, column and radial chromatography. The structures of the isolated compounds were determined by means of 1D and 2D NMR, FT-IR, UV-VIS spectroscopy and mass spectrometry.

 

Keywords: Arecaceae; β-sitosterol; Johannesteijsmannia altifrons; new compound, 2-[(1′E)-3′-hydroxyl-1′-methyl-1′-propen-1′-yl]-6-methoxy-7-[(2′′-methylheptyl)oxy]-5-benzofurancarboxylic acid; stigmasterol; γ-taraxasterol

 

ABSTRAK

Satu sebatian baru yang dikenal pasti sebagai asid 2-[(1′E)-3′-hidroksil-1′-metil-1′-propen-1′-il]-6-metoksi-7-[(2′′-metilheptil)oksi]-5-benzofurankarbosilik dan tiga sebatian yang telah dikenali iaitu β-sitosterol, γ-taraksasterol dan stigmasterol telah dipisahkan daripada ekstrakn-heksana rizom dan buahJohannesteijsmannia altifrons dengan menggunakan kromatografi cecair vakum, turus dan radial. Struktur sebatian yang terpisah ditentukan melalui kaedah spektroskopi RMN 1D dan 2D, IM–JF, UL-BN dan spektrometri jisim.

 

Kata kunci: Arecaceae; asid 2-[(1′E)-3′-hidroksil-1′-metil-1′-propen-1′-il]-6-metoksi-7-[(2′′-metilheptil)oksi]-5-benzofurankarbosilik; β-sitosterol; Johannesteijsmannia altifrons; sebatian baru, stigmasterol; γ-taraksasterol

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*Pengarang untuk surat-menyurat; email: wanyaa@ukm.edu.my