Zobrazeno 1 - 10
of 55
pro vyhledávání: '"Richard B. Greenwald"'
Autor:
Jing Xia, Clifford Longley, Yun H. Choe, Charles D. Conover, Qiuxia Zhao, Shuiyun Guan, Richard B. Greenwald, Hong Zhao
Publikováno v:
Oncology Research Featuring Preclinical and Clinical Cancer Therapeutics. 14:455-468
6-Mercaptopurine (6-MP) is an orally administered, water-insoluble purine analog that is effective against acute lymphatic leukemia. Oral absorption of 6-MP, however, is quite erratic, with only 16-50% of the administered dose reaching the blood. In
Publikováno v:
Bioconjugate Chemistry. 14:661-666
This paper reports on the synthesis, safety, and efficacy of a series of water-soluble derivatives of poly(ethylene glycol) (PEG)-conjugated amphotericin B (AmB). PEG 40 000 attached to the sugar amino group of AmB via labile carbamate and carbonate
Publikováno v:
Advanced Drug Delivery Reviews. 55:217-250
The current review presents an update of drug delivery using poly(ethylene glycol) (PEG), that focuses on recent developments in both protein and organic drugs. Certainly the past 10 years has resulted in a renaissance of the field of PEG drug conjug
Autor:
Yun H. Choe, Dechun Wu, Yoany Gervacio, Charles D. Conover, Maksim Royzen, Virna Borowski, Richard B. Greenwald, Mary Mehlig
Publikováno v:
Journal of Controlled Release. 79:55-70
The synthesis of branched PEG (40,000) acids has been achieved using aspartic acid (Asp) and AspAsp dendrons. Complete conjugation of these dendritic acids with cytosine arabinoside (ara-C) was achieved by the use of spacers that allowed a greater se
Publikováno v:
Bioconjugate Chemistry. 12:163-169
Using lysozyme as a representative protein substrate that loses its activity when PEGylation takes place on the epsilon-amino group of lysine residues, various amounts of a novel releasable PEG linker (rPEG) were conjugated to the protein. rPEG-lysoz
Autor:
Michelle Boro, Prakash Sai, Shuiyun Guan, Richard B. Greenwald, Yun H. Choe, Hong Zhao, Chyi Lee, Annapurna Pendri
Publikováno v:
The Journal of Organic Chemistry. 65:4601-4606
Convincing UV and NMR spectrophotometric evidence is presented which demonstrates that at physiological pH, 7.4, 20-O-acyl derivatives of camptothecin (CPT) are substantially more stable in the lactone form than the 20-OH parent. Additionally, it was
Autor:
Richard B. Greenwald, Maksim Royzen, Charles D. Conover, Dechun Wu, Yun H. Choe, Kwok L. Shum
Publikováno v:
Journal of Medicinal Chemistry. 43:475-487
A novel methodology for the synthesis of poly(ethylene glycol) (PEG) prodrugs of amino-containing compounds has been developed which is based on the trimethyl lock lactonization reaction. These PEG-modified double prodrugs are water soluble, and by s
Autor:
Yun H. Choe, Richard B. Greenwald, Charles D. Conover, Anthony Martinez, Shuiyun Guan, Annapurna Pendri, Dechun Wu, Kwok L. Shum, Zuliang Yao
Publikováno v:
Journal of Controlled Release. 61:281-294
This paper reports on the synthesis and in vivo oncolytic activity of a series of water-soluble acyl derivatives of polyethylene glycol (PEG) conjugated podophyllotoxin. Some analogs of the polymer conjugate showed significantly better activity in a
Autor:
Charles D. Conover, Anthony Martinez, Richard B. Greenwald, Hong Zhao, Annapurna Pendri, Shuiyun Guan, Yun H. Choe, Kwok L. Shum
Publikováno v:
Journal of Medicinal Chemistry. 42:3657-3667
A general methodology for synthesizing poly(ethylene glycol) (PEG) prodrugs of amino-containing compounds has been developed and constitutes the basis for solubilization of insoluble drugs, extending plasma circulating half-lives and, in the case of
Publikováno v:
Cancer Chemotherapy and Pharmacology. 42:407-414
Purpose: This study was designed to assess the circulatory retention, antitumor activity and tissue biodistribution of polyethylene glycol (PEG)-conjugated camptothecin-20-O-glycinate, PEG-β-camptothecin (PEG-β-CPT). PEG-β-CPT is a novel water-sol