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*Corresponding author.

Biochemical Systematics and Ecology 28 (2000) 803}804

Flavones from leaves of

Tecomella undulata

(Bignoniaceae)

M. Mohibb e Azam

*

, Abu Ghanim

Minor Forest Products Section, Division I, Central Arid Zone Research Institute (CAZRI), Jodhpur - 342003,

India

Received 18 August 1999; received in revised form 18 October 1999; accepted 11 November 1999

Keywords:┬╣ecomella undulata; Bignoniaceae; Flavones; Cirsimaritin; Cirsilineol

1. Subject and source

Tecomella undulata(Smith) Seem. commonly known as`Rajasthan Teakais one of the codominant species in the desert of western Rajasthan (Arya et al., 1992). Leaves were collected from C.R. Farm, CAZRI, Jodhpur.

2. Previous work

Chromone glucoside (Gujral et al., 1979), ferulic ester (Joshi et al., 1986), quinones (Joshi et al., 1977), iridoid glucoside (Joshi et al., 1975), tecomin (Pandey and Das-gupta, 1971), rutin, quercetin, luteolin glucoside (Taneja et al., 1975), tecoside (Verma et al., 1979), and undulatin (Verma et al., 1986) have been reported from this plant.

3. Present study

The concentrated petroleum ether extract prepared from the air dried leaves of

T. undulataby Soxhlet apparatus, was chromatographed over a column of silica gel.

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Elution with petrol}EtOAc(5 : 1) a!orded a mixture of two #avones which were separated and puri"ed by silica gel preparative TLC (0.4 mm thickness) using CHCl

3}MeOH (9 : 1).

The separated#avones were cirsimaritin and cirsilineol. Their identity was

con-"rmed on the basis of m.p., spectroscopic evidence notably UV, EIMS,1H NMR and direct comparison with the published data (cirsimaritin, Youssef and Frahm, 1995; cirsilineol, Devi et al., 1979).

4. Chemotaxonomic signi5cance

We report here for the"rst time the presence of cirsimaritin and cirsilineol inT. undulata. A review of literature showed that this is the"rst report of cirsimaritin and cirsilineol in the Bignoniaceae.

References

Arya, S., Toky, O.P., Harris, S.M., Harris, P.J.C., 1992. International Tree Crops J. 7, 141. Devi, G., Kapil, R.S., Popli, S.P., 1979. Indian J. Chem. 17B, 84.

Gujral, V.K., Gupta, S.R., Verma, K.S., 1979. Phytochemistry 18, 181. Joshi, K.C., Prakash, L., Singh, L.B., 1975. Phytochemistry 14, 380. Joshi, K.C., Singh, P., Pardasani, R.T., 1977. Planta Med. 31, 14. Joshi, K.C., Sharma, A.K., Singh, P., 1986. Planta Med. 1, 70. Pandey, V.B., Dasgupta, B., 1971. J. Indian Chem. Soc. 48 (10), 937. Taneja, S.C., Bhatnagar, R.P., Tiwari, H.P., 1975. Indian J. Chem. 13, 427.

Verma, K.S., Sood, G.R., Gupta, S.R., Gujral, V.K., 1979. J. Chem. Soc. Perkin Trans I 10, 2473. Verma, K.S., Jain, A.K., Gupta, S.R., 1986. Planta Med. 5, 339.

Youssef, D., Frahm, A.W., 1995. Planta Med., 61, 570

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