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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 The Hebrew University of Jerusalem (HUJI; he, הַאוּנִיבֶרְסִיטָה הַעִבְרִית בִּירוּשָׁלַיִם) is a public research university based in Jerusalem, Israel. Co-founded by Albert Einstein and Dr. Chaim Weiz ...
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''. Alternatively ...
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 and 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. The city is built west of the Iskar river, and h ...
,
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 Macedon ...
in 1930, to a Sephardic Jewish 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 Macedon ...
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 int ...
, 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 Chemistry is the science, scientific study of the properties and behavior of matter. It is a natural science that covers the Chemical element, elements that make up matter to the chemical compound, compounds made of atoms, molecules and ions ...
. 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 univ ...
, 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 The International Association for Cannabinoid Medicines (IACM), formerly known as the ''International Association for Cannabis as a Medicine'', is a Non-profit organization, non-profit Learned society, scientific society founded in Cologne in 200 ...
.


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 re ...
* 1999-2000 – President, International Cannabinoid Research Society (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 hon ...
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 publ ...
* 2002 – Honorary Member of the Israeli Society of Physiology and Pharmacology * 2003-2005 – Chairman of the Board,
International Association for Cannabinoid Medicines The International Association for Cannabinoid Medicines (IACM), formerly known as the ''International Association for Cannabis as a Medicine'', is a Non-profit organization, non-profit Learned society, scientific society founded in Cologne in 200 ...
(IACM) * 2006 – Honorary doctorate from
Complutense University The Complutense University of Madrid ( es, Universidad Complutense de Madrid; UCM, links=no, ''Universidad de Madrid'', ''Universidad Central de Madrid''; la, Universitas Complutensis Matritensis, links=no) is a public research university loca ...
* 2011 –
NIDA Nida or NIDA may refer to: People * Nida Allam (born 1993), American politician * Nida Fazli (1938–2016), Indian Hindi and Urdu poet and lyricist * Nida Eliz Üstündağ (born 1996), Turkish female swimmer * Eugene Nida (1914–2011), American l ...
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 Harvey Prize is an annual Israeli award for breakthroughs in science and technology, as well as contributions to peace in the Middle East granted by the Technion in Haifa. History The prize is named for industrialist and inventor Leo Harvey. T ...
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 incl ...
,
cannabigerol Cannabigerol (CBG) is one of more than 120 identified cannabinoid compounds found in the plant genus ''Cannabis''. Cannabigerol is the decarboxylated form of cannabigerolic acid, the parent molecule from which other cannabinoids are synthesized ...
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 Lumír Ondřej Hanuš ( he, לומיר הנוש) is a Czech analytic chemist and leading authority in the field of cannabis research. In 1992, he and William Anthony Devane isolated and first described the structure of anandamide, an endogenous ca ...
and William Devane. Another endogenous cannabinoid, 2-AG, 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