*Semisynthesis and cytotoxic activities of andrographolide analogues
نویسندگان
چکیده
منابع مشابه
Semisynthesis of cytochrome c analogues
We have used chemical and enzymic protein engineering techniques to create analogues of the semisynthetic two-fragment complex (1-37).(38-104) of mitochondrial cytochrome c. This complex, unlike the natural product of specific tryptic cleavage, (1-38).(39-104), from which it is prepared, quite closely resembles the parent protein in functional characteristics and is thus a suitable substrate fo...
متن کاملNew Substituted C(14)-andrographolide Derivatives with Potent Cytotoxic Activities
Andrographolde is the major secondary metabolite from the plant Andrographis paniculata. It has been found to show cytotoxic activity. To improve the efficacy on cytotoxic activity, a series of new sulfonyl derivatives have been synthesized by structural modifications of the andrographolide at C-2 position. All the derivatives were tested for their cytotoxic activity against human small lung ca...
متن کاملAndrographolide and analogues in cancer prevention.
Andrographis paniculata is a medicinal plant traditionally used for treatment of cough and cold, fever, laryngitis, and several infectious diseases. Extracts of A. paniculata have shown versatile potency against various diseases including cancer. The active biomolecules of A. paniculata mainly are lactone and diterpene. Andrographolide and analogues have been widely used for prevention of diffe...
متن کاملSemisynthesis and acetylcholinesterase inhibitory activity of stemofoline alkaloids and analogues.
Semisynthesis of the known Stemona alkaloids oxystemofoline (7) and methoxystemofoline (8) has been achieved starting from (11Z)-1',2'-didehydrostemofoline (6), which confirmed their structures and absolute configurations. The synthesis of (1'R)-hydroxystemofoline (9) helped establish this compound as a natural product from Stemona aphylla. (1'S)-Hydroxystemofoline (10) and a number of related ...
متن کاملSemisynthesis of cytotoxic proteins using a modified protein splicing element.
Two cytotoxic proteins, bovine pancreatic ribonuclease A (RNase A), and a restriction endonuclease from Haemophilus parainfluenzae (HpaI), were produced using a novel semisynthetic approach that utilizes a protein splicing element, an intein, to generate a reactive thioester at the C-terminus of a recombinant protein. Nucleophilic attack on this thioester by the N-terminal cysteine of a synthet...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
ژورنال
عنوان ژورنال: Journal of Enzyme Inhibition and Medicinal Chemistry
سال: 2006
ISSN: 1475-6366,1475-6374
DOI: 10.1080/14756360500499988