According to Vittorio Pavesi2), the leaves and fruits of Amorpha fruticosa, L. (family Leguminosae) which is frequently cultivated in gardens for decorative purposes, contain two distinct oils. Upon distillation with water vapor the fruits yielded 0,15 to 0,35 p.c, the leaves 0,05 to 0,08 p.c. of volatile oil light yellow in color, with a bitter taste and with the following constants:
Fresh oil from the leaves: nD17,5o 1,50083; nD18,5° 1,50928. Old oil from the leaves: nD17,5° 1,50036; nD18,5o 1,50892.
Oil from the unripe fruits: d15o0,9019; nD17,5° 1,49951 | optical rotation Oil from the ripe fruits: d15o 0,9055; nD17,5° 1,50036 ] slightly laevogyrate.
Fraction 150 to 200° (750 mm.), (80 to 120° under 30 mm. pressure) of the leaf oil contains a terpene that has not been further characterized. In the higher boiling fraction (b. p. 250 to 265°; d15o0,91661; nD15o1,50559) cadinene could be identified by means of its chlorhydrate melting at 117°. In large part, however, the fraction consists of a sesquiterpene (d15o0,916; nD16o1,50652) which resembles clovene, found by Wallach as companion of cadinene, and which also may be regarded as a new sesquiterpene to which Pavesi has given the name amorphene.
1) Report of Schimmel & Co. October 1903, 76.
2) Annuario della Soc. chimica di Milano 11 (1904), fascicles 1 and 2. - Rendiconti del R. 1st. Lomb. di sc. e lett. II. 37 (1904), 487; Report of Schimmel & Co. October 1904, 9.