Isolation of isomeric furocoumarins from the seeds of Psoralea corylifolia Linn. (Family Leguminosae) is being reported for the first time from the variety found in western Rajasthan. On the basis of physical and spectral parameters, i.e., UV, IR, NMR, mass and chemical reactions such as hydrolysis, alkali fusion and oxidation, they have been identified as 2H-furo[3',2'-g][1] benzopyran-2-one (1) and 2H-furo[2',3'-h] [1-] benzopyran-2-Psoralea corylifolia L. is an annual weed growing Spots were identified by UV lamp (365 nm) and by throughout the plains of India especially in the semi-arid spraying with a 10% solution of potassium hydroxide in regions of Rajasthan and the eastern districts of Punjab methanol or 10% antimony chloride in chloroform. adjoining Uttar Pradesh. The plant is of immense biological importance and it has been widely exploited Extraction and isolation: since ages for its magical effect against several skin About 1 kg of Psoralea corylifolia procured from the diseases like psoriasis, leucoderma and leprosy 1-3. Broad local market was sown. The plants, which were spectrum of biological activities, i.e., cytotoxicity 4 , reproduced (its identity was established by the antimutagenic 5 , bone calcification 6 , antiinflammatory 7 , Department of Botany, Jai Narain Vyas University, antibacterial 8 , antifungal 9 , antifeedant 10 and antirepellant 11 , Jodhpur). Seeds of this plant were used for the present were reported. chemical investigation.

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Isolation of Chalkones from the Seeds of Psoralea corylifolia Linn. -The title plant is used in the traditional Indian medicine against several skin diseases. Cytotoxicity, antimutagenicity, as well as repellant, antifeedant and other biological activities are also reported. -(AGARWAL, D.; GARG, S. P.; SAH*, P.; Indian J. Chem., Sect.

In the present studies an attempt has been made to evaluate the effect of various plant growth regulators on the yield of sennosides in C . angustifolia. The growth regulators which increased the yield of sennosides either by increasing their percentage or by increasing the total growth of plants were N, N-Succinic acid dimethylhydrazide (B,), (2-Chloroethyl) trimethyl ammoniumchloride (CCC), 2-,Chloroethyl phosphonic acid (Ethrel), Maleic hydrazide (MH) and 6-Furfuryl-aminopurine (K,inetin). Treatments with Indole-3-acetic acid (IAA), Gibberellic acid (GA) and Phosfon-D were not beneficial in increasing either sennosides content or dry matter accumulation in shoot. 90, 582 (1965).

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