From Cadia purpurea (Picc., Ait.), Caesalpiniaceae, a poisonous shrub from Ethiopia (Dire Dawa-Harrar), we earlier isolated spartein, lupanin, 13-hydroxylupanin and esters of the last compound. We now isolated four new alkaloids unknown in nature. According to their abundances and fragmentation patterns, the mass spectra of I and II are roughly similar; both the molecular ion of II and its fragment ions A and C contain one oxygen atom more than the corresponding ions of I, leading to the deduction of an OH-group in either ring A or B. From the MS data of III, we concluded it is an ester of β-pyrrolecarboxylic acid and II. In the IR spectra of II and III, an amide C=O absorption band at 1595 cm⁻¹ (cf. 1625 cm⁻¹ in I) was found, and this shift was attributed to an intramolecular hydrogen bond, resulting in the conclusion that II and III have an extra -OH at C₁₀. For IV, V, and VI, comparison of their spectroscopic (IR, NMR, and MS) data with known spartein-type alkaloids indicated the same skeleton. Acid hydrolysis provided evidence that V and VI are esters of IV. The easy loss of fragment C₅H₈NO from IV, V, and VI in the mass spectrometer and the amide -NH absorption at 3400 cm⁻¹ in the IR spectrum of the silyl derivative of IV (2 TMS) led to the conclusion that ring B is open between N₁ and C₁₀. The C=O absorption at 1640-1650 cm⁻¹ (secondary amide) in the IR spectra of IV, V, and VI and the proton signals at 3.55 ppm (-CH₂O-) and 5.25 ppm (-CH-O-CO-) of V confirmed the proposed structures. The ¹³C NMR spectrum of V was in agreement with spectra of similar compounds.