In:
Journal of Bioactive and Compatible Polymers, SAGE Publications, Vol. 5, No. 4 ( 1990-10), p. 420-429
Abstract:
Poly[3,4-dihydro-2H-pyran)-alt-(maleic acid)] and its derivatives were synthesized by hydrolyses or substitution reactions of the alternating copolymers obtained by radical copolymerizations of 3,4-dihydro-2H-pyran de rivatives with maleic anhydride The polymers have different substituents in the 2-position of tetrahydropyran rings in copolymer backbone, such as, hydroxyl, methoxy, ethoxy, acetoxy, carboxyl, methoxycarbonyl, carbamoyl, for myl, hydroxymethyl, acetoxymethyl, tosyloxymethyl, and mercaptomethyl groups. The copolymers obtained by solution copolymerizations were found to have low number-average molecular weights (Mn 〈 2,000), while bulk copoly merizations gave copolymers with higher Mn (4,000 - 8,000). ID 50 values of the copolymers on normal and tumor cells (3LL and B16) in vitro and the in creased life span against B16 melanoma in vivo were measured and they dis played cytotoxicities and antitumor activities comparable to or superior to that of DIVEMA, an alternating copolymer of divinyl ether-maleic anhydride (1:2). Especially high cytotoxicities against tumor and normal cells were found by the copolymers containing methoxy, acetoxy or formyl groups in vitro and high antitumor activities were found by the copolymers having hydroxy or acetoxy groups in vivo with the increased life spans of 140 and 147%, respectively.
Type of Medium:
Online Resource
ISSN:
0883-9115
,
1530-8030
DOI:
10.1177/088391159000500404
Language:
English
Publisher:
SAGE Publications
Publication Date:
1990
detail.hit.zdb_id:
2073790-7
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