Dioxolane analogs for improved inter-cellular delivery
申请人:Shire BioChem Inc.
公开号:US20030013660A1
公开(公告)日:2003-01-16
Dioxolane analogs of the following formula:
1
wherein R1 and R2 are defined herein, are useful in the treatment of cancer. For example, the compounds can be used to treat patients with cancer in which the cancer cells are deficient in nucleoside or nucleoside base transporters.
Analytical strategies for the structural elucidation of proline‐containing dipeptides by liquid chromatography‐electrospray ionization‐tandem mass spectrometry
implementing liquidchromatography‐electrospray ionization‐tandemmassspectrometry (LC‐ESI‐MS/MS) techniques is a challenging task. The ESI‐MS/MS spectra of protonated molecules [M + H]+ display a single dominant product ion, representing the pyrrolidinyl ring (m/z 70.0652). This lack of ESI‐MS/MS information leads to unavoidable ambiguity in the structure of the dipeptide. We demonstrate how structural information
CARBOHYDRATE-BASED DRUG DELIVERY POLYMERS AND CONJUGATES THEREOF
申请人:NEKTAR THERAPEUTICS
公开号:US20150051371A1
公开(公告)日:2015-02-19
Provided herein are water-soluble carbohydrate polymers which are monoderivatized at their reducing terminus, such that the carbohydrate polymers can be selectively conjugated at a single location. Also provided are methods of preparation and conjugation of the monoderivatized carbohydrate polymers.
Preparation of peptides with C-terminal proline amide
申请人:SANKYO COMPANY LIMITED
公开号:EP0197794A2
公开(公告)日:1986-10-15
A peptide with C-terminal proline amide is produced by reacting in aqueous solution a protein substrate having C-terminal prolyl-leucine, prolyl-isoleucine, prolyl-valine, or polyl-phenylalanine with carboxypeptidase Y in the presence of amonia. The ammonia is preferably generated by the aqueous reaction of an ammonium salt and an alkali. An example of the peptide product is human calcitonin.
在水溶液中,具有 C 端脯氨酰-亮氨酸、脯氨酰-异亮氨酸、脯氨酰-缬氨酸或多酰基苯丙氨酸的蛋白质底物与羧肽酶 Y 在氨的存在下发生反应,生成具有 C 端脯氨酸酰胺的多肽。 氨最好是由铵盐和碱在水溶液中反应生成的。 多肽产品的一个例子是人降钙素。
Process for preparing peptides having a c-terminal proline amide
申请人:SANKYO COMPANY LIMITED
公开号:EP0570244A1
公开(公告)日:1993-11-18
A process for the preparation of a peptide having a C-terminal amidated proline by the use of carboxypeptidase Y, and wherein only carboxypeptidase Y is used, even where a plurality of amino acids is attached to the proline of the precursor.
一种利用羧基肽酶 Y 制备具有 C 端酰胺化脯氨酸的多肽的工艺,其中只使用了羧基肽酶 Y,即使在前体的脯氨酸上连接了多个氨基酸的情况下也是如此。