Serine focused Covalent Fragments

Recently, more and more different specific covalent-acting chemical probes are employed for proteomic target identification and imaging, as well as for finding inhibitors with high specificity among related enzymes and enzyme isoforms. A large number of known covalent drugs and natural products have confirmed the efficacy of this method in drug discovery. Currently, the Serine hydrolase enzyme family is one of the largest and most diverse protein categories, including proteases, lipases, esterases, thioesterases, amidases, and peptidases. All of these enzymes use a base-activated Serine residue cleavage of amide bonds in substrates through a covalent acyl-enzyme intermediate.

BOC Sciences can construct a Serine focused Covalent Fragment Library based on specific structure moieties. Moreover, our library is available in diverse pre-plated formats for most convenient and fast delivery.

Figure 1. Screening of covalent reactive groups. (Shindo, N.; et al. 2019)

Library Design

BOC Sciences applies a parallel synthesis technology to synthesize our Serine focused Covalent Fragment Library. With decades of experience, our teams are able to synthesize compounds with most reliable covalent warheads with well determined reactivity. Our serine-focused library is designed based on the combination of specific moieties that can form covalent bonds, especially with serine residues and presence of a drug-like in the molecule.

Advanced Covalent Warhead

BOC Sciences employs the following covalent warheads to form covalent bonds in proteins with Ser residues, constructing our exclusive Serine focused Covalent Fragment Library:

Serine focused Covalent Fragments Characteristics

At BOC Sciences, our Serine focused Covalent Fragment Library contains 2,000 fragment molecules, which is a reliable source of high-quality fragments. We cooperate with experienced experts in the field of FBDD to design and deliver top-level fragment libraries, committed to meeting different requirement of each client.

Table1. The summary of the BOC Sciences Serine focused Covalent Fragments characteristics

Features of Serine focused Covalent Fragments

• Multiple filtering criteria (physical and chemical filters) are applied to BOC Sciences General Fragment Library to produce a reliable Serine focused Covalent Fragment Library
• Each undesirable function can be eliminated successfully via PAINS and our in-house developed reactivity filters
• The covalent warheads are carefully selected by our experienced experts according to their reactivity
• All fragments are synthesized with most reliable covalent warheads with well determined reactivity
• Hits compounds obtained from this library can be easily followed with analogues from over 2.9 M stock compounds or either synthesis of novel compounds through our unique Database technology
• The library is developed based on the well-known Rule of Three
• All compounds with side functional groups that interfere under most of the reaction conditions have been successfully removed from our library
• Cherry-picking is available

What We Deliver

• Delivered within 2 weeks and is available for prompt delivery in multiple formats
• Powders, dry films or DMSO solutions formatted in vials, 96 or 384-well plates
• All compounds pass QC evaluation (purity above 90%) before formatting to ensure the quality of the library by ¹H NMR
• Spectral data is available

BOC Sciences provides professional, rapid and high-quality services of Serine focused Covalent Fragments design at competitive prices for global customers. Personalized and customized services of Serine focused Covalent Fragments design can satisfy any innovative scientific study demands. Our clients have direct access to our staff and prompt feedback to their inquiries. If you are interested in our services, please contact us immediately!