Sains Malaysiana 40(5)(2011): 445–450
Synthesis and Antimicrobial Activity of
1-(5-Mercapto-1,3,4-Oxadiazol-2-yl)-2-(Pyridine-2-ylamino)ethanone
(Sintesis dan
Aktiviti Antimikrob Sebatian
1-(5-Merkapto-1,3,4-Oksadiazol-2-yl)-2-(Piridine-2-ylamino)etanon
Jumat Salimon1, *, NadiaSalih1 & Hasan Hussien1,2
1School of Chemical Sciences and Food Technology,
Faculty of Science and Technology
Universiti Kebangsaan Malaysia, 43600 Bangi Selangor D.E., Malaysia
2Department of Chemistry, College of Science, Al-Nahrain
University, Baghdad, Iraq
Diserahkan: 16
September 2009 / Diterima: 21 June 2010
ABSTRACT
1-(5-Mercapto-1,3,4-oxadiazol-2-yl)-2-(pyridine-2-ylamino)ethanone
(3), has been synthesized from 2-(pyridine-2-ylamino)acetohydrazide (2).
A yellow colored compound (2) was reacted with carbon disulfide and
potassium hydroxide in absolute ethanol to obtain the
1-(5-mercapto-1,3,4-oxadiazol-2-yl)-2-(pyridine-2-ylamino)ethanone. Structures
of the synthesized compounds were supported by means of IR, NMR, MS spectroscopic and elemental analysis. The synthesized compounds
were evaluated for their antimicrobial activity and were expressed as the
corresponding minimum inhibitory concentration (MIC).
A brown colored compound (3) with 90% yield has been successfully
synthesized. This compound was found to have significant antimicrobial activity
with MIC value ranging from 30.2 - 43.2 μg cm-3.
The findings of the present study indicate that cyclization of hydrazide acid
group of 2-(pyridine-2-ylamino)acetohydrazide (2) into 1,3,4-oxadiazole
nucleus resulted in increased antimicrobial activity.
Keywords: 1,3,4-oxadiazoles
compound; antimicrobial activity; hydrazide acid
ABSTRAK
Sebatian (3),
1-(5-merkapto-1,3,4-oksadiazol-2-yl)-2-(piridine-2-ylamino)etanon telah
disintesis daripada sebatian (2), 2-(pridin-2-ilamino)asetohidrazida.
Sebatian (2) yang berwarna kuning telah ditindakbalaskan dengan karbon
disulfida dan kalium hidroksida dalam etanol kontang untuk menghasilkan
sebatian 1-(5-merkapto-1,3,4-oksadiazol-2-yl)-2-(piridine-2-ylamino)etanon.
Struktur sebatian yang disintesis disokong oleh cerapan daripada instrumen IR, NMR, spektroskopi jisim dan analisis unsur. Sebatian yang disintesis
telah dinilai untuk aktiviti antimikrob dan dinyatakan sebagai nilai penghantaran
kepekatan penghalangan minima (MIC). Sebatian (3) yang
berwarna perang dengan peratusan hasil 90% telah berjaya disintesis. Sebatian
ini didapati menunjukkan aktiviti antimikrob yang signifikan dengan nilai MIC dalam
julat 30.2 - 43.2 μg cm-3. Kajian ini menunjukkan
bahawa proses pengsiklikan kumpulan asid hidrazida dalam sebatian
2-(piridin-2-ylamino)asetohidrazida (2) kepada nukleus sebatain
1,3,4-oksadiazol menyebabkan peningkatan dalam aktiviti antimikrobial.
Kata kunci:;
aktiviti antimikrob; asid hidrazida; sebatian 1,3,4-oksadiazol
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*Pengarang
untuk surat-menyurat; email: jumat@ukm.my
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