Med chem lecture on Anticholinergic drugs for B.Pharm level in Nepal
Content from Foye's Principle of medicinal chemistry, my own thoughts and some articles
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This ppt covers the classification, structures and IUPAC names, Mechanism of action and uses of individual drugs...under anticonvulsants topic..Side effects/metabolism are also given for few
This slide discusses about fused heterocyclic compound Acridine..the structural analogue of anthracene with one carbon group is replaced with nitrogen atom.
Med chem lecture on Anticholinergic drugs for B.Pharm level in Nepal
Content from Foye's Principle of medicinal chemistry, my own thoughts and some articles
General Anaesthesia (Medicinal Chemistry)Yogesh Tiwari
General anaesthetics are group of drugs that produces loss of consciousness, and therefore, loss of all sensations.
The absolute loss of sensation is termed as anaesthesia.
This ppt covers the classification, structures and IUPAC names, Mechanism of action and uses of individual drugs...under anticonvulsants topic..Side effects/metabolism are also given for few
This slide discusses about fused heterocyclic compound Acridine..the structural analogue of anthracene with one carbon group is replaced with nitrogen atom.
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Narcotic analgesics
1. NARCOTIC ANALGESICS AND NARCOTIC
ANTAGONISTS
BY
KENCHA SWATHI
ASSISTANT PROFESSOR
DEPT OF PHARMACEUTICAL CHEMISTRY
ADITYA BIPER
BANGALORE
2. NARCOTIC ANALGESICS
The drugs interact with opioid receptors in the CNS. The
interactions result in the narcotic pharmacological effects of
analgesia, sedation and cough suppression are called as
narcotic analgesics.
Eg: Morphine sulphate
Codiene
Levorphanol
Diphenoxylate Hydrochloride
Pentazocine
Meperidine Hydrochloride
Loperamide Hydrochloride
Fentanyl citrate
Methadone Hydrochloride
Propoxyphene Hydrochloride
Anilerdine Hydrochloride
3. OPIOID RECEPTORS
Opioid receptors are categorised into:
1.Delta opioid receptors(δ)
2.Kappa opioid receptors (k)
3.Mu opioid receptors (μ)
All the three opioid receptors are located either in the
human brain or spinal cord tissues.
Each receptor plays a major role in the control,regulation
and management of pain threshold.
Orphan opioid receptor is the new one.
4. SAR OF MORPHINE ANALOGUES
A ring and basic nitrogen are the most important structural features.
A tertiary amine group is necessary for opioid activity with N-methyl
group displaying good agonistic properties.
If the N atom contains higher alkyl groups then the compound shows
antagonistic activity.
Eg: Nalorphine & Naltrexone
If OH group is changed to H group at 3rd position then activity will be
decreased 10 times.
If OH group is changed to H group at 6th position then activity will be
increased.
5. If the double bond between 7th and 8th position is reduced,then the
activity will be increased.
Eg: Oxycodone
Replacement of OH group with ketone group at 6th position decreases
the narcotic agonistic activity.
Eg: Hydromorphone
Hydrocodone
Methylation or acetylation of OH group at 3rd position ,activity will be
decreased.
Eg: Codeine
Heroin
β –OH group at 14th position increases the narcotic agonistic activity.
Acetylation of 6-OH group will increase the activity.
Nitrogen containing a -CH₂ -CH₂ -phenyl group ,activity will increase by
10 folds.
6. MORPHINE SULPHATE
Uses:1.Analgesic
2.In the treatment of long bone fractures,myocardial infarction.
3.To treat terminal stages of cancer,burn patients,post operative
patients,visceral pains.
4.To treat biliary colic and renal colic pain
5.Used as obstetric analgesia
17. NARCOTIC ANTAGONISTS
The drugs which are competitive antagonists that bind to the opioid
receptors with higher affinity than agonists but do not activate the
receptors.
These drugs effectively blocks the receptor,preventing the body from
responding to opioids and endorphins.
Eg: Nalorphine hydrochloride
Levallorphan tartarate
Naloxone hydrochloride