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Raphael Mechoulam ( he, רפאל משולם, bg, Рафаел Мешулам; born 5 November 1930) is an Israeli
organic chemist Organic chemistry is a subdiscipline within chemistry involving the scientific study of the structure, properties, and reactions of organic compounds and organic materials, i.e., matter in its various forms that contain carbon atoms.Clayden, J.; ...
and professor of
Medicinal Chemistry Medicinal or pharmaceutical chemistry is a scientific discipline at the intersection of chemistry and pharmacy involved with designing and developing pharmaceutical drugs. Medicinal chemistry involves the identification, synthesis and developme ...
at the Hebrew University of Jerusalem in Israel. Mechoulam is best known for his work (together with Y. Gaoni) in the isolation, structure elucidation and total synthesis of Δ9-
tetrahydrocannabinol Tetrahydrocannabinol (THC) is the principal psychoactive constituent of cannabis and one of at least 113 total cannabinoids identified on the plant. Although the chemical formula for THC (C21H30O2) describes multiple isomers, the term ''THC' ...
, the main active principle of
cannabis ''Cannabis'' () is a genus of flowering plants in the family Cannabaceae. The number of species within the genus is disputed. Three species may be recognized: '' Cannabis sativa'', '' C. indica'', and '' C. ruderalis''. Alternativel ...
and for the isolation and the identification of the endogenous cannabinoids
anandamide Anandamide (ANA), also known as ''N''-arachidonoylethanolamine (AEA), is a fatty acid neurotransmitter. Anandamide was the first endocannabinoid to be discovered: it participates in the body's endocannabinoid system by binding to cannabinoid r ...
from the brain and 2-arachidonoyl glycerol (2-AG) from peripheral organs together with his students, postdocs and collaborators.


Biography

Mechoulam was born in
Sofia Sofia ( ; bg, София, Sofiya, ) is the Capital city, capital and List of cities and towns in Bulgaria, largest city of Bulgaria. It is situated in the Sofia Valley at the foot of the Vitosha mountain in the western parts of the country. ...
,
Bulgaria Bulgaria (; bg, България, Bǎlgariya), officially the Republic of Bulgaria,, ) is a country in Southeast Europe. It is situated on the eastern flank of the Balkans, and is bordered by Romania to the north, Serbia and North Mac ...
in 1930, to a
Sephardic Jewish Sephardic (or Sephardi) Jews (, ; lad, Djudíos Sefardíes), also ''Sepharadim'' , Modern Hebrew: ''Sfaradim'', Tiberian: Səp̄āraddîm, also , ''Ye'hude Sepharad'', lit. "The Jews of Spain", es, Judíos sefardíes (or ), pt, Judeus sefa ...
family. His father was a
physician A physician (American English), medical practitioner (Commonwealth English), medical doctor, or simply doctor, is a health professional who practices medicine, which is concerned with promoting, maintaining or restoring health through th ...
and head of a local hospital, while his mother "who had studied in Berlin, enjoyed the life of a well-to-do Jewish family". He attended an "American grade school" until his parents were forced to leave their hometown because of anti-semitic laws and his father was subsequently sent to a concentration camp, from which he survived. After the communist takeover of hitherto pro-German
Bulgaria Bulgaria (; bg, България, Bǎlgariya), officially the Republic of Bulgaria,, ) is a country in Southeast Europe. It is situated on the eastern flank of the Balkans, and is bordered by Romania to the north, Serbia and North Mac ...
in 1944 he studied
chemical engineering Chemical engineering is an engineering field which deals with the study of operation and design of chemical plants as well as methods of improving production. Chemical engineers develop economical commercial processes to convert raw materials in ...
, which he "disliked." In 1949 his family immigrated to
Israel Israel (; he, יִשְׂרָאֵל, ; ar, إِسْرَائِيل, ), officially the State of Israel ( he, מְדִינַת יִשְׂרָאֵל, label=none, translit=Medīnat Yīsrāʾēl; ), is a country in Western Asia. It is situated ...
where he later studied chemistry. He gained his first research experience in the Israeli Army working on
insecticides Insecticides are substances used to kill insects. They include ovicides and larvicides used against insect eggs and larvae, respectively. Insecticides are used in agriculture, medicine, industry and by consumers. Insecticides are claimed t ...
. He received his M.Sc. in biochemistry from the Hebrew University of Jerusalem (1952), and his Ph.D. at the
Weizmann Institute The Weizmann Institute of Science ( he, מכון ויצמן למדע ''Machon Vaitzman LeMada'') is a public research university in Rehovot, Israel, established in 1934, 14 years before the State of Israel. It differs from other Israeli un ...
, Reḥovot (1958), with a thesis on the chemistry of steroids. After postdoctoral studies at the Rockefeller Institute, New York (1959–60), he was on the scientific staff of the Weizmann Institute (1960–65), before moving to the Hebrew University of Jerusalem, where he became professor (1972) and Lionel Jacobson Professor of Medicinal Chemistry from 1975. He was rector (1979–82) and pro-rector (1983–85). In 1994 he was elected a member of the
Israel Academy of Sciences Israel Academy of Sciences and Humanities, based in Jerusalem, was established in 1961 by the State of Israel to foster contact between Israeli scholars in the sciences and humanities and create a think tank for advising the government on r ...
. Mechoulam is one of the founding members of the International Association for Cannabinoid Medicines.


Honours and awards

* 1994 – Member of the
Israel Academy of Sciences and Humanities Israel Academy of Sciences and Humanities, based in Jerusalem, was established in 1961 by the State of Israel to foster contact between Israeli scholars in the sciences and humanities and create a think tank for advising the government on r ...
* 1999-2000 – President,
International Cannabinoid Research Society The International Cannabinoid Research Society (ICRS) is a professional society for scientific research in all fields of the cannabinoids, based in North Carolina, US. ICRS is one of the very few global non-profit medical societies or associatio ...
(ICRS) * 2000 – Israel Prize in Exact Sciences - Chemistry * 2001 –
Honorary doctorate An honorary degree is an academic degree for which a university (or other degree-awarding institution) has waived all of the usual requirements. It is also known by the Latin phrases ''honoris causa'' ("for the sake of the honour") or '' ad ho ...
from
Ohio State University The Ohio State University, commonly called Ohio State or OSU, is a public land-grant research university in Columbus, Ohio. A member of the University System of Ohio, it has been ranked by major institutional rankings among the best pu ...
* 2002 – Honorary Member of the
Israeli Society of Physiology and Pharmacology Israeli may refer to: * Something of, from, or related to the State of Israel * Israelis, citizens or permanent residents of the State of Israel * Modern Hebrew, a language * ''Israeli'' (newspaper), published from 2006 to 2008 * Guni Israeli ...
* 2003-2005 – Chairman of the Board, International Association for Cannabinoid Medicines (IACM) * 2006 – Honorary doctorate from Complutense University * 2011 – NIDA Discovery Award * 2012 –
EMET Prize The EMET Prize for Art, Science and Culture is an Israeli prize awarded annually for excellence in academic and professional achievements that have far-reaching influence and make a significant contribution to society. Prizes are awarded in the fol ...
in Exact Sciences - Chemistry * 2012 – Recipient of th
Rothschild Prize
in Chemical Sciences and Physical Sciences * 2014 – IACM Award * 2016 – Genius 100 Visionary * 2018 – ''Honoris causa'' from the
University of Guelph , mottoeng = "to learn the reasons of realities" , established = May 8, 1964 ()As constituents: OAC: (1874) Macdonald Institute: (1903) OVC: (1922) , type = Public university , chancellor ...
* 2019-2020 – Harvey Prize of the TechnionHarvey Prize 2019-20
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Research

Raphael Mechoulam's major scientific interest is the chemistry and pharmacology of
cannabinoids Cannabinoids () are several structural classes of compounds found in the cannabis plant primarily and most animal organisms (although insects lack such receptors) or as synthetic compounds. The most notable cannabinoid is the phytocannabinoid tet ...
. He and his research group succeeded in the total synthesis of the major plant cannabinoids Δ9-
tetrahydrocannabinol Tetrahydrocannabinol (THC) is the principal psychoactive constituent of cannabis and one of at least 113 total cannabinoids identified on the plant. Although the chemical formula for THC (C21H30O2) describes multiple isomers, the term ''THC' ...
,
cannabidiol Cannabidiol (CBD) is a phytocannabinoid discovered in 1940. It is one of 113 identified cannabinoids in cannabis plants, along with tetrahydrocannabinol (THC), and accounts for up to 40% of the plant's extract. , clinical research on CBD inc ...
, cannabigerol and various others. Another research project initiated by him led to the isolation of the first described
endocannabinoid Cannabinoids () are several structural classes of compounds found in the cannabis plant primarily and most animal organisms (although insects lack such receptors) or as synthetic compounds. The most notable cannabinoid is the phytocannabinoid tet ...
anandamide Anandamide (ANA), also known as ''N''-arachidonoylethanolamine (AEA), is a fatty acid neurotransmitter. Anandamide was the first endocannabinoid to be discovered: it participates in the body's endocannabinoid system by binding to cannabinoid r ...
which was isolated and characterized by two of his postdoctoral researchers, Lumír Ondřej Hanuš and William Devane. Another
endogenous Endogenous substances and processes are those that originate from within a living system such as an organism, tissue, or cell. In contrast, exogenous substances and processes are those that originate from outside of an organism. For example, ...
cannabinoid,
2-AG 2-Arachidonoylglycerol (2-AG) is an endocannabinoid, an endogenous agonist of the CB1 receptor and the primary endogenous ligand for the CB2 receptor. It is an ester formed from the omega-6 fatty acid arachidonic acid and glycerol. It is present ...
, was soon discovered by Shimon Ben-Shabat, one of his PhD students. He published more than 450 scientific articles.


References


External links


"The Scientist"
a documentary about the life and work of Raphael Mechoulam {{DEFAULTSORT:Mechoulam, Raphael 1930 births Living people Israel Prize in chemistry recipients Israeli chemists Bulgarian Jews in Israel Israeli people of Bulgarian-Jewish descent Hebrew University of Jerusalem faculty Members of the Israel Academy of Sciences and Humanities Bulgarian emigrants to Israel Scientists from Sofia HU cannabinoids Cannabis researchers Members of the Israel Society for Physiology and Pharmacology Cannabis in Israel