Editing 1973 in science (section)

==Chemistry==
* A successful method of [[Vitamin B12 total synthesis|Vitamin B<sub>12</sub> total synthesis]] is reported by the groups of [[Robert Burns Woodward]] and [[Albert Eschenmoser]].<ref>{{cite journal|title=The Total Synthesis of Vitamin B<sub>12</sub>|first=R. B.|last=Woodward|journal=[[Pure and Applied Chemistry]]|year=1973|volume=33|issue=1|pages=145–178|url=http://www.iupac.org/publications/pac/33/1/0145/|doi=10.1351/pac197333010145|accessdate=2012-01-13|pmid=4684454|s2cid=30641959 |doi-access=free}}</ref><ref>{{cite book|author1=Nicolaou, K. C. |author2=Sorensen, E. J. |year=1996|title=Classics in Total Synthesis: Targets, Strategies, Methods|publisher=Wiley|isbn=978-3-527-29231-8}}</ref>
* [[Akira Endo (biochemist)|Akira Endo]] identifies the first [[statin]], [[mevastatin]].<ref>{{cite journal|first=Akira|last=Endo|author2=Kuroda M.|author3= Tsujita Y.|title=ML-236A, ML-236B, and ML-236C, new inhibitors of cholesterogenesis produced by Penicillium citrinium|journal=Journal of Antibiotics|date=December 1976| volume=29|issue=12|pages=1346–8|pmid=1010803|doi=10.7164/antibiotics.29.1346|doi-access=free}}</ref>