OK! A brief partial list and a link!
Google books
Penicillin
Taxol
Marinol
Aspirin
DMSO (not natural, but certainly not patentable)
Lovaza
Digoxin
Belladonna
any opiate, but most notably opium
Atropine
Estrogen/testosterone/most other hormones
Cocaine
Nicotine
Vincristine
Marihuana (glaucoma and fun)
Lithium carbonate
L-arginine
Amrubicin
Anidulafungin
Apomorphine
Artemotil
Aztreonam
Biapenem
Bivalirudin
Bleomycin
Capsaicin
Caspofungin
Cefditoren
Codinaeopsin
Colchicine
Daptomycin
Dimethyltryptamine
Doripenem
Dronabinol
Ergotamine
Ertapenem
Everolimus
Exenatide
Fumagillin
Galantamine
Ixabepilone
Lisdexamfetamine
Mescaline
Methylnaltrexone
Micafungin
Miglustat
Mycophenolate
Nitisinone
Orlistat
Paclitaxel
Phenethylamine
Pimecrolimus
Retapamulin
Romidepsin
Rosuvastatin
Spiruchostatins
Telavancin
Telithromycin
Temsirolimus
Tigecycline
Tiotropium
Trabectedin
Ziconotide
Zotarolimus
All the above come either directly from refined natural sources and others come from extraction from natural sources. Just a few for space!
How come pharma got involved with those?
Because of Traditional Medicine usage TESTIMONIALS.
Once they heard the bells ringing, they knew where the mass was taking place!