Showing papers by "Mawardi Rahmani published in 2003"
TL;DR: Detailed chemical investigation on Micromelum minutum (Rutaceae) collected from Sepilok, Sabah, Malaysia gave four new coumarins that have been fully characterised by spectroscopic methods.
29 citations
01 Jan 2003
TL;DR: Four known compounds were isolated from the leaves of Ficus elastica Roxb and showed antibacterial activity but no antifungal activity was observed against the tested organisms.
Abstract: Four known compounds (emodin, sucrose, morin and rutin) were isolated
from the leaves of Ficus elastica Roxb The structures of the compounds were
established by spectroscopic techniques and by comparison with published
data The compounds were screened for antimicrobial activity against two
species of bacteria, Bacillus cereus (Gram-positve) and PseuiUlmonas aeruginosa
(Gram-negative) and four species of fungi by using the disc diffusion method
The compounds showed antibacterial activity but no antifungal activity was
observed against the tested organisms
20 citations
01 Jan 2003
TL;DR: The leaves, bark and fruits of Ficus benjamina Linn were subjected to extraction and isolation using chromatographic techniques to yield six compounds (cinnamic acid, lactose, naringenin, quercetin, caffeic acid and stigmasterol), which were screened for antimicrobial activity and cytotoxic activity.
Abstract: The leaves, bark and fruits of Ficus benjamina Linn. were subjected to extraction
and isolation using chromatographic techniques to yield six compounds
(cinnamic acid, lactose, naringenin, quercetin, caffeic acid and stigmasterol).
The structures of the compounds were determined by spectroscopic techniques
and by comparison with published data. The compounds were screened for
antimicrobial activity against two species of bacteria (Bacillus cereus and
Pseudomonas aeruginosa) and cytotoxic activity against T-lyrnphoblastic leukemic
(CEM-SS) cell line. Caffeic acid exhibited strong cytotoxic activity with IC
50
value of 25 mg/mL.
18 citations
Journal Article•
TL;DR: In this paper, three highlyoxygenated flavonoids; gardenin E (1), gardenin A (2), and gardenin C (3) were elucidated based on NMR, MS, UV, IR data and also by comparison with the previous works.
Abstract: Chemical studies on the constituents of the leaves of Murraya paniculata (Lynn) Jack have furnished three highly-oxygenated flavonoids; gardenin E (1), gardenin A (2), and gardenin C (3). Structures of the compounds were elucidated based on NMR, MS, UV, IR data and also by comparison with the previous works. The antimicrobial activities of these compounds and the crude extracts were also evaluated.
8 citations