David Markham Lemal (born 1934) is the Albert W. Smith Professor of Chemistry Emeritus and Research Professor of Chemistry at Dartmouth College.[1][2][3] He received an A.B. degree (summa) from Amherst College in 1955 and a Ph.D. in chemistry from Harvard University in 1959.[4] At Harvard he worked with R. B. Woodward on deoxy sugars and a synthesis of the alkaloid yohimbine.[5]