vitamins & supplements definition: vitamins are minute quantities of organic substances...
TRANSCRIPT
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Vitamins & Supplements
• Definition: Vitamins are minute quantities of organic substances essential for the regulation of metabolic processes.
• Researchers mistakenly named these minute nutrients as amine containing water soluble substances.
• Vita=vital for life
• Min=amine
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A table of vitamin deficiency and overdose data from the web
• http://en.wikipedia.org/wiki/Vitamin
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Vitamins
• Water soluble:– B,C, G, (riboflavin) H (biotin)
• Water insoluble:– A, D, E and K
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A
OH
Retinol (Vitamin A)
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A
• Carotene is a provitamin A• It is yellow in color (highly conjugated)• Air oxidation at the right carbon positions (red)
will give Vitamin A
Carotene
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A
• Needed for – Growth of tissues– Reproduction– Vision
• Deficiency –– Night blindness
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A• Accutane for acne treatment is the carboxylic
acid of Vitamin A
OH
O
Accutane
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B1
• Vitamin B1 ((thiamine) the name implies sulfur and amine in the molecule– Water soluble– Found in polishings of yeast and rice (about
5-10 grams from 1 ton of rice)
• Deficiency– Beriberi (degeneration and inflammation of
the nerves, heart and digestive system)
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B1
• Thiamine (or a thiazolium salt)
N
N
N
S
NH2H3C
CH3
O
R
+
ThiamineR = mon, di or triphosphate
Cl-
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Stetter reaction for Lipitor Synthesis
• A thiamine catalyst was used in the synthesis of an important intermediate toward the commercial production of Lipitor.
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B2
• Vitamin B2 (riboflavin)– Water soluble– Found in liver, heart and kidney, vegetables
and fruits
• Deficiency– Impaired growth, dermatitis (pellagra, or lip
lesions)
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B2
• Bitter taste (amine)• Yellow color (because
it is highly conjugated)
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B6
• Vitamin B6 (paradoxine)– Water soluble– Found in rice and bran
• Deficiency– Pellagra (especially in
lesions of the tongue)
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B6
• Folic Acid– Water insoluble– Found in vegetables, liver and yeast
• Deficiency– Essential for the growth of red and white
blood cells– Implicated in child birth defects in women with
folic acid deficiency
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B6 (Folic acid)
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B12 (cobalt complex)
• Vitamin B12 (Cobalt amine)– Water soluble– Found in liver
• Deficiency– Pernicious anemia (3-6 micrograms per
individual is sufficient to prevent this disorder)
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B12
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Vitamin C
• 1535 Jacques Cartier and his sailors were cured by Newfoundland Indians by drinking the extract from spruce tree needles.
• 1747, British navel surgeon prescribed lime to sailors to prevent scurvy. Thus the slang limey for British sailor.
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C• It came from D-glucose, D-galactose or D-
glucaric acid. It has the following structure:
O
O
HOH2C
OH
H
HO OH
l--Ascorbic Acid
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Vitamin C
• Vitamin C– Water soluble– Found in fresh fruit and vegetables– White crystalline sour taste (acid)
• Deficiency– Scurvy (limey – a nickname for British sailors)
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D2
H3CCH3
CH3
CH3
HO
H
CH3
Vitamin D2
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Vitamins & Supplements
• Vitamin D– Water insoluble– Found in egg yolk, liver
• Deficiency– Vision defects
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D
• Vitamin D– Water insoluble– Found in egg yolk, liver
• Deficiency– Vision defects
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Vitamins & Supplements
• Vitamin E– Water insoluble– Found in egg yolk, liver
• Deficiency– Vision defects
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Vitamin E
• Found in wheat germ, corn, sunflower seeds, soy bean oil, alfalfa and lettuce
• Has three chiral centers
• Anti-oxidant
• Oil soluble
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O
CH3 CH3
CH3
CH3
H H
CH3
HO
H3C
CH3 Vitamin E
Vitamin E
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Vitamin H (BIOTIN)
• It functions as a cofactor for enzyme reactions
HN NH
S
O
OH
O
H H
H
BIOTIN
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Vitamin H (BIOTIN)
• The first commercial process was developed by Leo Sternbach (inventor of Valium and Librium) at Hoffmann-La Roche
• Deficiency in human is rare because intestinal flora biosynthesis of biotin from cysteine.
• Deficiency symptoms are dermatitis, weight loss and loss of appetite.
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Vitamin K1 and K2
O
O CH3 H3C
CH3
3
Vitamin K1
CH2
O
O CH3 4
Vitamin K2
H
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Vitamin K1 and K2
• Found in green vegetables
• Promote blood clotting
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Drugs for common aches and pains
• NSAID (Non-Steroidal Anti-inflammatory Drugs) commonly OTC products such as Aspirin, Tylenol, Midol etc.
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Aspirin
• Invented by Author Eichengruen in Bayer in 1897
• John Vane in 1971 published the paper on aspirin and related products on inhibition of prostaglandin synthesis (1982 Nobel laureate in Physiology)
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COX 2 Inhibitors
O
O
S
O O
VIOXX $2.5 B in 2002
N
N
S
H2N
O O
CF3
CELEBREX $1.5 B in 2002
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COX 2 inhibitors
• Cyclooxygenase 2 inhibitors
• They also prevent the biosynthesis of prostaglandins, thus reduce pain.
• They are more gentle on the stomach thus avoid the common side effects of stomach bleeding of NSAID
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Morphine analogs
OH3CO OCH3
N
OH3CO
N
OH
H
OH3CO
N
O
OH
OXYCODON
THEBAINE CODEINE
with aspirin is Percodanwith acetaminophen is Percocetwith ibuprofen is OxyContin
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Morphine
• These are extremely habit forming
• The most abused drug in the US
• Heroin is derived from morphine
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Drugs historyfor hypertension
ACE inhibitor
• The discovery of Captopril (1981)
• 1960 John Vane discovered the pit viper venom to be an angiotensin II inhibitor
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Other ACE inhibitors2002 sales value MM$
• Accupril (Quinapril) Parke-Davis 706
• Altace (Ramipril) King Pharma 527
• Zestril (Lisinopril) Astra Zeneca 478
• Lotensin (Benazepril) Novartis 483
• Captopril Bristol Myer and generics<100
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Drugs history
• Cows feeding on sweet clover were dying from internal bleeding (over 100 year ago)
• U of Wisconsin ag school found the active material named it after the Wisconsin Alumni Research Foundation (WARF)
• Warfarin (coumadine) a rat poison as well as a blood thinner for DVT
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Warfarin
OO O
OH
WarfarinCoumadine
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Antibiotics
• Beta lactams (penicillin)
• It discrupt the gram positive bacteria cell wall
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Problems in penicillin
• Allergy/hypersensitivity
• Allergic reactions to any β-lactam antibiotic may occur in up to 10% of patients receiving that agent. Anaphylaxis will occur in approximately 0.01% of patients
• Resistance to penicillin because of misuse.
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Other anti-infectives
• Macrolides
• Erythromycin
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Azithromycin
• This is a second generation erythromycin
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Anti-infective
• Linezolide (invented by Upjohn scientists)
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Linezolide
• Also known as Zyvox
• Came on the market in 2000
• 2003 bacteria resistance was reported