Chemistry of Plant Natural Products: Stereochemistry, ...
Sunil Kumar Talapatra
Naturstoffe, 1977, 36, 1-229. Helmut Duddeck and Manfred Kaiser, 13C NMR Spectroscopy of Coumarin Derivatives, Organic Magnetic Resonance, 1982, 20, 55-68. Atta-ur-Rahman and Vigar Uddin Ahmad, 13CNMR of Natural Products, Vol.