• YAKHAK HOEJI
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• v.40 no.6
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• pp.621-624
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• 1996

Betaine was treated with hydrochloric acid and then with sodium borohydride to give a hydroxy compound 2. The reaction of 2 with thionyl chloride followed by thiourea led a comp ound 5. Oxidation of compound 2 with pyridinium dichromate(PDC) and succesive treatment with Lawesson's reagent also afforded the same compound 5. Cleavage of N-C14 bond compound of 7 was carried out via two reaction sequence from the compound 4. Finally, compound 10 was sythesized by a series of transformations from the compound 4.

• YAKHAK HOEJI
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• v.40 no.5
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• pp.487-490
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• 1996

The 13-hydroxyberbine(1), derived from berberinephenolbetaine, has been derivatized to furnish a variety of compounds such as 13-oxoberbine(2), 13-thioberbine(3), 13-chloroberbi ne(4), 13-(2-methylaziridine)berbine(5) and 13-carbolactoneberbine(6). Antitumor activity of these compounds was tested.

• YAKHAK HOEJI
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• v.36 no.1
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• pp.1-6
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• 1992

Irradiation of phenolbetaine in a stream of nitrogen produced 8,14-cycioberbine[1]. Compound[1] was treated with 10% HCl solution to give the 8-hydroxycycloberbine[2] in 67.7% yield. Subsequently addition of ethylchloroformate to the compound[2] gave rise to the 8-hydroxy-7-ethylcarboxy-9, 10-dimethoxy-2, 3-methylenelioxy-13-oxo-norochotensane[3] in 78% yield. Treatment of the compound[3] with bis-(2-chloroethyl)amine then lead to the 7-bis(2-chloroethyl)carbamyl-norochoteneare[4]. On the other hand the compound[5], which is the 8-methoxynorochotensane, was derived when compound[1] was treated with methanol in a few drops of BF. Treatment of the compound[6], and the compound[7], 7-bis(2-chloroethyl)-carbanyl-8-methoxy-norocheyensane, was then synthesized by reaction of the compound[6] with bis(2-chloroethyl) amine. In the other synthetic pathway when compound[5] was treated with $POCl_3$ in dried benzene, 13-chloro-6-ene-norochetensane[8] with 42% yield was formed. Finally the 13-bis-(2-chloroethyl) amino-8-methoxy-norochotensane[9] was produced when we treated the compound[8] with bis-(2-chloroethyl) amine. In another pathway, reaction between phenolbetaine which is the precursor of the compound[1] and benzoylchloride in dried chloroform gave us the 5,6,7 trihydro-2, 3-methylene-dioxy-9-chloromethyl-10, 11-dimethoxyphenylisoquinoline-8-benzoate[10] in 73% yield. The results of biological activities for these compounds are also presented in Table I and II.