The diagnosis of autoimmune hepatitis was made by combining clinical, analytical (absence of other etiologies such as hepatotrope virus positivity, enolic
intake or recently new introduced drugs) and histological data (liver biopsy compatible with presence of plasma cell aggregates in the portal regions).
Hydrocortisone has a broad O-H intermolecular hydrogen bonded peak at 3420 [cm.sup.-1], weak olefinic or aromatic H-C= stretch at 3015 [cm.sup.-1], merge C-H stretch at 2917 [cm.sup.-1], five-member ring ketonic stretch at 1720 [cm.sup.-1], six-member ring ketonic and enolic
carbonyl stretch at 1665 [cm.sup.-1], C[H.sub.2] attached to ketonic of olefinic scissoring bend at 1433 [cm.sup.-1], C[H.sub.2]CO scissoring vibration at 1408 [cm.sup.-1] , and the fingerprint region which is distinct to every steroid.
Because it is unclear how NSAIDs affect the coronary artery endothelium, we set out to compare three different NSAIDs, specifically potent diclofenac, highly selective COX-2 inhibitor etoricoxib, and enolic
acid-derived meloxicam on stimulated HCAEC.
Absorption spectra of DBM shows broad band with maximum at 343 nm, which is assigned to enolic
[pi]-[pi]* transitions of the [beta]-diketone moiety.
Meloxicam is an NSAID that is an enolic
acid derivative and a COX-2 preferential inhibitor in the species studied.
They have several oxygenated functionalities as carboxylic, phenolic, enolic
, hydroxyl, quinone, sugars and peptide groups (Jones & Bryan, 1998; Kumada, 1987; Kawasaki, et al., 2008; Yang, et al., 2015), which give them a hydrophilic character, and aliphatic and aromatic groups that confer them hydrophobic characteristics (Gomes, et al., 2016).
A strong IR absorption peak is also observed at ~ 1498cm-1 in all Hydrazone Ligands and their complexes, assigned to (NCO-)  but not observed in Nalidixic acid, which suggested the enolic
coordination mode of ligands for complexation with metal atoms.
The 5-arylidene-3-alkanoyl tetramic acids contain structural adjuncts, an enolic
[beta],[beta]'-tricarbonyl moiety, a lipophilic 3-alkanoyl moiety, and a hydrophobic group at the 5-position anticipated to permit versatile activity.
Notably, self-condensation products were not observed probably because of the deactivation of the nucleophilic properties of the A ring via the enolic
C-ring tautomer (Scheme 7) .
Based on the integration, this singlet is the combination of the protons from dimethyl sulfoxide (DMSO) and enolic
proton after forming the complex.