Chalcone, flavone, and flavanone had been synthesized as candidate of the antimalarial compounds. The chalcone 1was synthesised from 2,4-dihydroxyacetophenone and 4-metoxybenzaldehyde as starting materials using base catalyst KOH via Claisen-Schmidt Condensation. The synthesis flavone 2was carried out by cyclization of chalcone 1using I2 in DMSO, while the flavanone 3was produced by cyclization of chalcone 1using NaOAc as a base catalyst. An in vitro antimalarial activity of the compound 1, 2and 3have been evaluated with the chloroquine diphosphate as a positive control in various concentration, and this assay was carried out according to the Basilico method. The IC50value of compound 1, 2, 3and a positive control were 0.25; 0.62; 1.33 and 0.35 mM, respectively. The result showed that chalcone1with the lowestIC50value is a potential candidate as an antimalarial agent.

This study aims to determine the content of active compounds of secondary metabolites and antibacterial activity of secondary metabolites from a maceration of turmeric leaf (Curcuma longa Linn.) and kaffir lime leaf (Citrus hystrix) against Escherichia coli (E. coli). Each sample of kaffir lime leaf and turmeric leaf was extracted by maceration method using 96% ethanol solvent for 3 x 24 hours and the solvent was changed every 1 x 24 hours, then the filtered filtrate was thickened using a rotary evaporator. The phytochemical screening test was carried out by qualitative method using chemical reagents. The antibacterial activity test of the extract of the combination of turmeric leaves (Curcuma longa Linn.) and kaffir lime leaves (Citrus hystrix) used the Punch Hole Diffusion method with various concentrations of 20%, 40%, 60%, 80%, and 100%. The results showed that the combined extract of turmeric leaf (Curcuma longa Linn.) and kaffir lime leaf (Citrus hystrix) contained secondary metabolites in the form of flavonoids, alkaloids, steroids, tannins, and saponins. The optimum zone of inhibition to inhibit the growth of E. coli produced was 9.73 ± 0.78 mm. Overall, it can be concluded that the combined extract of turmeric leaf (Curcuma longa Linn.) and kaffir lime leaf (Citrus hystrix) has potential as an alternative to antibacterial active compounds.

l-menthyl acetic is an ester with specific aroma that synthesized by reaction of l-menthol and acetic anhydride and useful in fragrance industry. This paper reports influenced variation of time reaction toward ester product and characteristics l- menthyl acetic based on TLC, FTIR, GC and GC-MS. Reaction using l-menthol, acetic anhydride and catalyst H­2­SO­4­ 98 % in diethyl eter solvent at temperature 60 °C with variation of time reaction (45, 60, 75, 90, 105 minutes). The result of research is variation of time influence product with highest yield 88,43 % for 90 minutes. Monitoring TLC achived R­f­ = 0,82; analysis by FTIR achived specific wave number ester 1736,96 cm-1; analysis by GC achived t­r­ = 14,82 minutes and analysis by GC-MS achived t­r­ = 16,13 minutes with base peak m/z = 95.

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Background: It is unknown whether proteinuria caused by ramcirumab (RAM) induces renal dysfunction. Thus, this study assessed the relationship between proteinuria and other factors with RAM therapy, and compared estimated glomerular filtration rate (eGFR) with or without proteinuria in long-term treatment.Methods: Medical records were retrospectively reviewed for 156 patients treated with chemotherapy that included RAM between April 1, 2015 and May 31, 2019 at Kure Medical Center. Forty-eight patients with a performance status of 3 or 4, or not measured for proteinuria among those treated with RAM, or has detected proteinuria before first commencing RAM administration were excluded. Proteinuria and eGFR were measured before treatment with RAM, and compared to minimum eGFR with or without proteinuria after treatment with RAM. The proteinuria group was defined as proteinuria detected at more than 1+ at least once.