• Archives of Pharmacal Research
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• 제18권2호
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• pp.75-78
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• 1995

The analysis method nad stability test of antineoplaston A10, a new anticancer drug candidate, were established. A10 and phenylacetyl- L-glutamine, one of the degradation products, can be detected by high-performance liquid chromatography. The degradation kinetics of antineoplaston A10 in aqueous solutions from pH 1 to 10 buffers were carried out at 40, 50 and 60.deg.C. Pseudo-first order kinetics were obtained throughout the entire pH ranges studied. The pH-rate profiles showed that antineoplaston A10 was very unstable in alkaline conditions and most stable at pH 4.

• Archives of Pharmacal Research
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• 제17권6호
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• pp.467-469
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• 1994

Some Mannich bases of Antineoplaston A10 which is antitumor agent under chlinical investigation were synthesized and tested fro cytotoxicity. The tested compounds (2a, 2b, 2d) showed good activity comparable to that of carboplatin.

• 약학회지
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• 제41권3호
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• pp.283-293
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• 1997

Some analogs and their Mannich bases of Antineoplaston A10 (A10) were synthesized. Chemical yield for the 2-(or 3-)thienyl, benzol, and phenylpropionyl analogs were high but 1-naphthyl analog was synthesized in low yield. The Mannich bases formation of these analogs with morpholine went verywell compared to other bases. 1-Naphthyl, 4-nitrobenzoyl, and phenylpropionyl analogs of A10 showed weak in vitro activity but the other A10 analogs showed weaker or no activity at 10-1000mcg/ml. But their Mannich bases containing A10analogs showed good in vitro activity compared to simple A10 analogs.

• Archives of Pharmacal Research
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• 제21권2호
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• pp.157-163
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• 1998

Several aniline mustard analogues were obtained by introducing N,N-bis(2-chloroethyl)amino moiety to phenyl ring of A10 analogues in order to increase reactivity of A10 analogs and selectivity into DNA. The in vitro antitumor activity of synthesized compounds was evaluated using five different solid tumor cell lines by SRB method. Aniline mustard analogues exhibited more potent antitumor activity than A10 analogs. Especially, m-aniline mustard of benzoyl analogue displayed remarkable antitumor activity.

• Bulletin of the Korean Chemical Society
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• 제17권9호
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• pp.858-861
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• 1996

• Journal of Pharmaceutical Investigation
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• 제27권4호
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• pp.287-293
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• 1997

To make a stable o/w emulsion, the effects of egg lecithin as an emulsifier and polyvinylpyrrolidone (PVP) as an auxiliary emulsifier on the physical stability of emulsion were investigated. The oil-in-water emulsion system was manufactured by microfluidizer and evaluated the physical stability. Average particle size and size distribution of emulsion was measured by dynamic light scattering analyzer and interfacial tension was measured. From the interfacial tension tested, critical micelle concentration of the egg lecithin was 0.1 %w/v and optimal concentration for the preparation of emulsion was 1.0 %w/v. The mean particle size was about $0.2\;{\mu}m$ which was suitable for injections. The short-term accelerated stability studies were conducted by centrifugation, freeze-thaw method and shaking of the emulsion samples. The addition of PVP was caused the reduction in the particle size and improved the physical stability of emulsion. These results suggested that a mixed interfacial film comprising the egg lecithin and PVP was formed at the o/w interface and it was effective in preventing phase separation under thermic or mechanical stress. We used antineoplaston A10 (A10) as a model drug which is peptide and amino acid derivative having a action to the living organism against the development of neoplastic growth by a nonimmunological progress. It has a poor solubility in water and there may be a difficulty in formulation of A10. Emulsion formulation study about A10 was performed. Solubility of A10 in emulsion was about five times as high as that in water. From the results of solubility and partition coefficient, almost A10 molecules in o/w emulsion exist in the interface between oil and water.