One more!
The Total Synthesis of Lysergic Acid
Edmund C. Kornfeld, E. J. Fornefeld, G. Bruce Kline, Marjorie J. Mann, Dwight E. Morrison, Reuben G. Jones, R. B. Woodward
J. Am. Chem. Soc., 1956, 78 (13), pp 3087–3114
(15 steps)
The discovery of the "special effects" of LSD can be mentioned. The exploits of RB Woodward are of course legendary.