Albert Eschenmoser

1955–1960 Pioneering research on vitamin B12 synthesis 1960 Promoted to associate professor; became full professor in 1965 1972 Completed total synthesis of vitamin B₁₂ 1980s–1990s Research on the chemical origins of nucleic acids; developed artificial genetic polymers such as TNA 1986 Awarded the Wolf Prize in Chemistry for work on natural product synthesis and reaction mechanisms 1992 Retired from ETH Zurich; continued research as professor at Scripps Research Institute 1996–2009