Endocannabinoid Biology

Raphael Mechoulam, PhD

Professor Emeritus of Medicinal Chemistry

Hebrew University of Jerusalem · Jerusalem, Israel

h-index 98

62,000+ citations

450+ publications

0 active trials

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Biography

Raphael Mechoulam is widely regarded as the "father of cannabis research." Over a career spanning more than six decades, he isolated and characterized the structure of THC (1964), CBD (1963), and the endogenous cannabinoid anandamide (1992). His discovery of the endocannabinoid system — the body's own cannabis-like signaling network — fundamentally transformed our understanding of neuroscience, immunology, and pain biology. Born in Sofia, Bulgaria in 1930, Mechoulam survived the Holocaust and emigrated to Israel, where he joined the Hebrew University in 1966. He has received numerous honors including the Harvey Prize, the Israel Prize, and the NIDA Discovery Award. His work laid the scientific foundation for every cannabinoid medicine in clinical use today.

Key Contributions

1First isolation and structural characterization of THC (1964)
2First isolation and characterization of CBD (1963)
3Discovery of anandamide — the first endogenous cannabinoid (1992)
4Discovery of 2-arachidonoylglycerol (2-AG) as the primary endocannabinoid (1995)
5Proposed the "entourage effect" — synergy between cannabinoids and terpenes (1998)
6Synthesis of HU-210, the most potent synthetic cannabinoid agonist
7First controlled clinical trial of cannabis in epilepsy (1980)

Selected Publications

Isolation, Structure, and Partial Synthesis of an Active Constituent of Hashish

3,200 citations

Journal of the American Chemical Society · 1964

The first isolation and complete structural characterization of Δ9-tetrahydrocannabinol (THC) from Cannabis sativa. This landmark paper established the chemical identity of the primary psychoactive constituent of cannabis and opened the modern era of cannabinoid research.

DOI: 10.1021/ja01062a046

Isolation and Structure of a Brain Constituent That Binds to the Cannabinoid Receptor

4,800 citations

Science · 1992

Discovery and characterization of anandamide (arachidonylethanolamide) as the first endogenous ligand for the cannabinoid receptor. This paper established the existence of the endocannabinoid system and launched a new field of neuroscience.

DOI: 10.1126/science.1470919

An Entourage Effect: Inactive Endogenous Fatty Acid Glycerol Esters Enhance 2-Arachidonoyl-Glycerol Cannabinoid Activity

1,900 citations

European Journal of Pharmacology · 1998

First description of the "entourage effect" — the concept that inactive compounds in cannabis and the endocannabinoid system can enhance the activity of active cannabinoids. This paper provided the theoretical framework for whole-plant cannabis medicine.

DOI: 10.1016/S0014-2999(98)00649-9

Cannabidiol: An Overview of Some Pharmacological Aspects

2,100 citations

Journal of Clinical Pharmacology · 2002

Comprehensive review of CBD pharmacology covering anxiolytic, antipsychotic, anticonvulsant, and neuroprotective properties. This paper catalyzed modern clinical interest in CBD and remains one of the most-cited cannabinoid reviews.

DOI: 10.1002/j.1552-4604.2002.tb05998.x

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