5 6 b a CH CH NH R 2 4 1 3 2 R 3 R 4 R 5 R 1 3 4 OH
alpha receptors 1 -R 1 PLC IP 3 DAG 2 -R NE 2 2 Gi camp
beta receptors 1 -R SA and AV node 1 Gs camp 2 -R 2 2 Gs camp
adrenaline,epinephrine,ad dopaine,da ephedrine noradrenaline,ne metaraminol phenylephrine methoxamine isoprenaline dobutamine albuterol
HO CH CH 2 NH OH CH 3 1 Adr HO b a Epinephrine, Adrenaline - R
3 Adr - R
- R 4 R R R 1 -R
- R 5 R Glucose
- R 2 R R R 3 4 Adr
α β-r DA HO HO - R b a CH 2 CH 2 NH 2 Dopamine 1 DA 1 camp camp DA 2 camp camp DA R DA 1 -R -R
- R 2 DA 1 -R NA DA Adr 3 DA 1
- R
- R b a CH CH NH OH CH 3 CH 3 Ephedrine b a CH CH NH 2 CH 3 Amphetamine CH CH N CH 3 H CH 3 Methamphetamine
-R Ephedrine α β 1 b a CH CH NH OH CH 3 CH 3
-R 1 2 3
a b 1 1 HO Norepinephrine, Noradrenaline HO b a CH CH 2 NH 2 OH - R
- R 3
b OH HO H 3 CO a CH CH NH 2 OH - R Metaraminol CH 3 b a CH CH 2 NH OH Phenylephrine CH 3 b a CH CH NH 2 OH CH 3 OCH 3 Methoxamine
- R 1. 2 3.
1 b 1 b 2 2 β 2 3 4 5 HO HO b CH CH 2 NH OH Isoprenaline a CH CH 3 2 - R
- R
- R
- R HO b 1 HO b a CH 2 CH 2 NH CH (CH 2 ) CH 3 Dobutamine OH
b 2 HO HOH 2 C - R b a CH CH 2 NH OH C(CH 3 ) Salbutamol