摘要:
Described herein are methods for the synthesis of derivatives of thiosulfonate reagents. Said reagents have utility for the synthesis of phosphorothiotriesters from H-phosphonates in a stereospecific fashion.
摘要:
The invention provides an improved process for preparing romidepsin. The process involves producing, purifying, or storing romidepsin under conditions that prevent the formation of undesired adducts. Purifying romidepsin at an apparent pH lower than approximately 6.0 (e.g., between an apparent pH of 4.0 and 6.0) has been discovered to prevent the reduction of the disulfide bond of romidepsin and the subsequent formation of dimerized, oligomerized, or polymerized adducts. The invention also provides compositions of monomeric romidepsin free of dimerized, oligomerized, or polymerized adducts.
摘要:
Novel compounds and compositions including those compounds, as well as methods of using and making the compounds are herein described. The compounds are useful in therapeutic applications, including modulation of disease or disease symptoms in a subject (e.g., mammal, human, dog, cat, horse). The compounds are useful as modulators of the mu opioid receptor (MOR) through their binding affinity with that receptor.
摘要:
The invention provides an improved process for preparing romidepsin. The process involves producing, purifying, or storing romidepsin under conditions that prevent the formation of undesired adducts. Purifying romidepsin at an apparent pH lower than approximately 6.0 (e.g., between an apparent pH of 4.0 and 6.0) has been discovered to prevent the reduction of the disulfide bond of romidepsin and the subsequent formation of dimerized, oligomerized, or polymerized adducts. The invention also provides compositions of monomeric romidepsin free of dimerized, oligomerized, or polymerized adducts.
摘要:
Uridine analogs and techniques for making and using uridine analogs are disclosed in this invention. These uridine analogs include nucleoside phosphates having a 5-aminouracil group. These nucleotides can be incorporated into a nucleic acid as an unnatural base, as a substitute for uridine or thymine. The nucleic acid can then be treated with an oxidizing agent and an alkaline solution, which causes cleavage of the nucleic acid at the position of the unnatural base. The nucleoside phosphate analogs can be used in many ways, including measuring chemical interactions between nucleic acids and other compounds, or sequencing nucleic acids. Additional compounds can also be derivitized onto the amino group, allowing other functionalities to be added to the nucleoside phosphate, or to the nucleic acid incorporating the nucleoside phosphate.
摘要:
A chemical analog of adenine is provided which can be incorporated into DNA but base pairs as normal, and does not disrupt DNA secondary structure. The analog is cleavable and disrupts functionality with DNA-binding protein. The analog finds use in a technique provided by the invention involving TDI footprinting or adenine-DNA contacts.
摘要:
Methods of designing and producing sequence-specific DNA binding proteins, methods of determining the affinity of a specific binding molecule for a target and products produced by these methods are disclosed. The methods include: forming a reversible bond between a specific binding molecule and the target and determining the susceptibility of the reversible bond to reversal as a measure of the affinity of the binding molecule for the target.
摘要:
Stably cross-linked a polypeptides related to human MAML are described. These cross-linked polypeptides contain at least two modified amino acids that together form an internal cross-link or tether that can help to stabilize the alpha-helical secondary structure that is thought to be important for binding of MAML peptides to the Notch transcription complex, a complex that includes ICN and CSL.
摘要:
Novel polypeptides and methods of making and using the same are described herein. The polypeptides include cross-linking (“hydrocarbon stapling”) moieties to provide a tether between two amino acid moieties, which constrains the secondary structure of the polypeptide. The polypeptides described herein can be used to treat diseases characterized by excessive or inadequate cellular death.