135719-28-7Relevant articles and documents
Near infrared light-triggered drug generation and release from gold nanoparticle carriers for photodynamic therapy
Cheng, Yu,Doane, Tennyson L.,Chuang, Chi-Hung,Ziady, Assem,Burda, Clemens
, p. 1799 - 1804 (2014)
A photoprecursor Pc 227 is covalently bound onto gold nanoparticles (Au NPs) to produce the known photodynamic therapy (PDT) drug Pc 4 upon 660 nm photoirradiation. The photochemical formation of the photoproduct Pc 4 is identified by spectroscopy, chromatography, and mass spectrometry and its PDT efficacy is equal to Pc 4 when administered non-covalently by Au NPs, with the added benefit of improved covalent delivery and targeted NIR-triggered release from the covalent Pc 227-Au NP conjugate, while during transport the attached Pc 227 is quenched by the Au NP and PDT inactivated.
Synthesis, properties and drug potential of the photosensitive alkyl- and alkylsiloxy-ligated silicon phthalocyanine Pc 227
Li, Jun,Yang, Yang,Zhang, Ping,Sounik, James R.,Kenney, Malcolm E.
, p. 1690 - 1698 (2015/01/08)
The photosensitive, alkyl- and alkylsiloxy-ligated silicon phthalocyanine, SiPc[(CH2)3SH][OSi(CH3)2(CH2)3N(CH3)2], Pc 227, has been prepared and characterized. This phthalocyanine yields the experimental photodynamic therapy (PDT) drug Pc 4, SiPc[OH][OSi(CH3)2(CH2)3N(CH3)2], when irradiated with red light. To provide an understanding of the process by which Pc 227 and other alkyl-alkylsiloxysilicon phthalocyanines such as Pc 227 are photolyzed, bond dissociation energy, natural bond orbital (NBO) charge distribution, spin density distribution, nucleus-independent chemical shift (NICS), and electron localization function (ELF) calculations have been carried out on two models related to it. These show that the lowest energy pathway for the photolysis of Pc 227 is a homolysis involving a phthalocyanine π radical having a low SiPc-C bond dissociation energy. The promise of the results of this study for synthetic chemistry and drug development is discussed. This journal is
TOPICAL DELIVERY OF PHTHALOCYANINES
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Page/Page column 20, (2008/06/13)
The invention relates to topical pharmaceutical compositions comprising a phthalocyanine, wherein a diamagnetic metal ion moiety is either coordinated or covalently bound to the phthalocyanine core. The invention also relates to methods for destroying cancer tissue, precancerous cells, photo-aged cells, damaged cells, or otherwise pathologic cells, or activated cells, such as lymphocytes or other cells of the immune system, or activated or inflamed tissue cells comprising topically administering to the cancer tissue or surrounding tissue an effective amount of a phthalocyanine composition.