A direct, acid-catalyzed substitution reaction incorporates an N-phthalimidomethyl group on the 4' or 5' carbon of a psoralen in yields of 60-80% via the condensation of an N-hydroxymethylamide or phthalimide (e.g. N-hydroxymethylphthalimide) and an appropriately substituted psoralen. The phthalimide moiety is cleaved from the psoralen ring by treatment with hydrazine to give 60 to 70% yields of the aminomethylpsoralens.
The invention relates to 5'-aminoalkyl-4',4,8-trialkylpsoralens having enhanced photosensitizing activity, especially oral and topical activity, as well as low toxicity, when compared with psoralens of different structure.
Compositions comprising microaggregates containing hydrophobic drugs, as well as methods for their production, are described. Such microaggregates may include micelle structures or combinations thereof with liposomes, and constitute an effective delivery vehicle for a hydrophobic agent. Methods for microaggregate production include the use of preferred lipid compounds and processing conditions favoring the production of small aggregates for improved filter sterilization.
Immuno-adjuvant PDT treatment of metastatic tumors
申请人:——
公开号:US20020022032A1
公开(公告)日:2002-02-21
Immuno-adjuvant photodynamic therapy to treat and prevent metastatic cancer is effected using photosensitizers in combination with immuno-adjuvants to destroy metastatic tumor cells.
治疗和预防转移性癌症的免疫辅助光动力疗法是利用光敏剂与免疫辅助剂相结合来破坏转移性肿瘤细胞。
Supports for photosensitizer formulations
申请人:——
公开号:US20020061330A1
公开(公告)日:2002-05-23
The invention is generally related to the field of formulating medicaments in association with a solid support. Such formulations comprising photosensitizers, and their use in photodynamic therapy, are also provided. Methods for the production of the medicament formulations are also disclosed.