Friedelin and associated triterpenoids

<b>Mass Spectrometry in Structural and Stereochemical Problems. XXXII.</b>¹ <b>Pentacyclic Triterpenes</b>

H. Budzikiewicz, J. M. Wilson, Carl Djerassi · Journal of the American Chemical Society · 1963 · 862 citations

Chemical Measurement, Engineering, Chemical Analysis +10

The semiempirical derivation of ¹³C nuclear magnetic resonance chemical shifts. Hydrocarbons, alcohols, amines, ketones, and olefins

Helmut Beierbeck, John K. Saunders, John W. ApSimon · Canadian Journal of Chemistry · 1977 · 128 citations · Full text

Engineering, Nuclear Physics, Magnetic Resonance +17

Optical Rotatory Dispersion Studies. VII.¹ Application to Problems of Absolute Configurations²

Carl Djerassi, Rosemarie Riniker, B. Riniker · Journal of the American Chemical Society · 1956 · 125 citations

Optical Materials, Engineering, Wave Optic +26

The Nuclear Magnetic Resonance Spectra of Pentacyclic Triterpenes^1,2

Maurice Shamma, R. E. Glick, Ralph O. Mumma · The Journal of Organic Chemistry · 1962 · 101 citations

Molecular Sciences, Experimental Nuclear Physics, Engineering +15

Carbon-13 nuclear magnetic resonance spectroscopy of naturally occurring substances. I. Direct analysis of nonprotonated carbon centers

Ernest Wenkert, A. O. Clouse, David W. Cochran et al. · Journal of the American Chemical Society · 1969 · 99 citations

Engineering, Magnetic Resonance, Direct Analysis +16