Highlights with ‘pharma’

Improved absolute configuration determination of complex molecules with VCD

All biological systems are three-dimensional and determining the exact configuration of the system is important for pharmaceutical applications and drug design. However, determining 3D-structures is complicated and difficult. Vibrational circular dichroism is a method using...

SCM at AIChE, Orlando

Come and talk to Nick about your chemical engineering challenges at the annual AIChE meeting mid-November in Orlando. At the SCM booth (#143) he’ll be happy to discuss how the COSMO-RS module in the Amsterdam...

ReaxFF strikes back: the return of the gold nanoparticles

Their delivery power awakens In a recent combined experimental and computational study, it was shown that ReaxFF can realistically describe functonalized gold nanoparticles to understand and predict antibiotic release. This proves great promise for simulations...

COSMO-RS: Prediction of cellulose solubilities in ionic liquids

In a recent publication Yunhan Chu et al. have presented an automated computational framework for the prediction of cellulose solubilities in ionic liquids based on COSMO-RS. The logarithmic activity coefficients and excess enthalpies were calculated...

COSMO-RS: Fast sigma profile estimations and new UNIFAC implementation

Fast estimation of sigma profiles for high-throughput screening Thermodynamic properties of liquids and solutions can now be very quickly predicted, through fast approximations of sigma profiles through SMILES strings or xyz coordinates. These new fast...

Reparametrization of COSMO-RS for ionic liquids

New and improved COSMO-RS parameters for CO2 solubility in ionic liquids In a recent Green Energy & Environment publication Lei and coworkers present a reparametrization of COSMO-RS parameters for ionic liquids within the ADF framework....

A general Pd-catalyzed pathway to β-lactams

In a recent Science paper the Gaunt group reports facile access to β-lactams via palladium-catalyzed coupling of aliphatic amines and carbon monoxide. The scope of the reaction is remarkably broad; over 40 substrates are illustrated, bearing a...

Characterizing aqueous cysteine in bulk and at the surface

Reactive molecular dynamics simulations (ReaxFF) and X-ray photoelectron spectroscopy were used to investigate both the bulk and the surface distribution of cysteine species in aqueous solution. Experimentally, the protonation state of cysteine, which in water...

Strong AT hydrogen bonds: sp2 enhances electrostatics & covalency, no resonance-assistence

The recent cover story of Chemistry Open pursues the origin of the strong hydrogen bonds in Watson-Crick base pairs. While the commonly held theory of resonance-assisted hydrogen bonding underlying this hydrogen bond strengthening has been...

DNA/RNA transverse current sequencing: Intrinsic structural noise from neighboring bases

Nanopore DNA sequencing via transverse current offers a number of advantages with respect to current technologies, however, the base calling error rates are still too high. The source of noise has to be understood in...