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Synthesis and Biological Studies of New Lipid-Soluble Cisplatin Analogues Entrapped in Liposomes

Synthesis and Biological Studies of New Lipid-Soluble Cisplatin Analogues Entrapped in Liposomes

S al-Baker, R Perez-Soler, A R Khokhar

J Inorg Biochem. 1992 Aug;47(2):99-108.

PMID: 1431876

Abstract:

A series of highly lipophilic platinum(II) complexes of the type cis-[(RNH2)2PtX2] have been synthesized, where R = ethyl, propyl, isopropyl, butyl, cyclopropyl, cyclopentyl, or neopentyl and X = either long-chain carboxylate, such as decanoate (C10), laurate (C12), myristate (C14), heptadecanoate (C17), stearate (C18), nonadecanoate (C19), or 2,2,3,3-tetramethylcyclopropylcarboxylate, or branched-chain carboxylate, such as neopentanoate, neohexanoate, neoheptanoate, neononanoate, or neodecanoate. These complexes have been characterized by elemental analysis, IR, and 13C and 195Pt NMR spectroscopic techniques. The platinum complexes were entrapped in multilamellar vesicles composed of dimyristoyl phosphatidylcholine (DMPC) and dimyristoyl phosphatidylglycerol (DMPG) at a 7:3 molar ratio and tested for antitumor activity. The entrapment efficiency of liposomal platinum (L-Pt) complexes ranged from 60 to 100%. The percentage of T/C obtained after a single i.p. injection of the optimal dose of L-Pt complexes tested against L1210 leukemia ranged from 90 to 125%. These L-Pt preparations did not show significant antitumor activity in mice.

Chemicals Related in the Paper:

Catalog Number	Product Name	Structure	CAS Number	Price
AP30673360	Butyl decanoate		30673-36-0	Price

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