ethyl-ferulate and caffeic-acid

Using an HIV-1 Reverse Transcriptase (RT)-associated RNase H inhibition assay as lead, bioguided fractionation of the dichloromethane extract of the Ocimum sanctum leaves led to the isolation of five triterpenes (1-5) along with three 3-methoxy-4-hydroxy phenyl derivatives (6-8). The structure of this isolates were determined by 1D and 2D NMR experiments as well as ESI-MS. Tetradecyl ferulate (8) showed an interesting RNase H IC

Topics: Amides; Anti-HIV Agents; Binding Sites; Caffeic Acids; Coumaric Acids; DNA-Directed DNA Polymerase; Esters; HIV Reverse Transcriptase; Plant Extracts; Ribonuclease H, Human Immunodeficiency Virus; Structure-Activity Relationship; Triterpenes

The anticancer activities of alkyl esters and NO-donors of ferulic acid (FA) and caffeic acid (CA) were assessed by a high-throughout screening (HTS) method, and the structure-activity relationships were described. CA alkyl esters had better anticancer activities than FA alkyl esters with the same alkyl substituent. Mono-nitrates and phenylfuroxan nitrates were more potent than the dual nitrates. Phenylsulfonylfuroxan nitrates of FA, especially compounds 8b-8d, exhibited more potent activities in anticancer.

Topics: Antineoplastic Agents; Caffeic Acids; Cell Line, Tumor; Cell Proliferation; Coumaric Acids; Dose-Response Relationship, Drug; Drug Screening Assays, Antitumor; HeLa Cells; High-Throughput Screening Assays; Humans; Molecular Structure; Stereoisomerism; Structure-Activity Relationship

It is an important therapeutic strategy to protect mitochondria from oxidative stress, especially during ischemia-reperfusion. In the present study, an attempt has been made to evaluate the protective effects of caffeic acid phenethyl ester (CAPE) and its related phenolic compounds on mouse brain and liver mitochondria injury induced by in vitro anoxia-reoxygenation. Added before anoxia or reoxygenation, CAPE markedly protected coupled respiration with the decrease in state 4 and the increases in state 3, respiratory control ratio (RCR) and ADP/O ratio in a concentration-dependent manner. CAPE effectively protected mitochondria by inhibiting the mitochondrial membranes fluidity decrease, the lipoperoxidation and the protein carbonylation increase, which indicated its protective action against the mitochondrial oxidative damage. Meanwhile, CAPE blocked the enhanced release of cardiolipin (CL) and cytochrome c (Cyt c). The related phenolic compounds like caffeic acid (CA), ferulic acid (FA) and ethyl ferulate (EF) also had different-degree protective effects. CAPE and CA were more potent than FA and EF. Their structural differences played the key role in their activity levels. These results suggest that CAPE and its related phenolic compounds protect mitochondria mainly correlated to their antioxidative activities and may be of interest for the prevention and therapy of ischemia-reperfusion injuries.

Topics: Anaerobiosis; Animals; Anisotropy; Antioxidants; Brain; Caffeic Acids; Coumaric Acids; Cytochromes c; Dose-Response Relationship, Drug; Male; Mice; Mitochondria; Mitochondria, Liver; Mitochondrial Membranes; Molecular Structure; Oxygen; Phenylethyl Alcohol; Thiobarbituric Acid Reactive Substances