A general NMR approach to provide pure in-phase (PIP) multiplets in heteronuclear correlation experiments is described. The implementation of a zero-quantum filter efficiently suppresses any unwanted anti-phase contributions that usually distort the multiplet pattern of cross-peaks and can hamper their analysis. The clean pattern obtained in PIP-HSQMBC experiments is suitable for a direct extra...

Photochemically induced dynamic nuclear polarization (photo-CIDNP) is a method to hyperpolarize spins using light. In most cases, CIDNP experiments are performed in high magnetic fields and the sample irradiated by light inside resonance (NMR) spectrometer. Here we demonstrate photo-CIDNP hyperpolarization generated Earth’s field under zero- ultralow-field (ZULF) conditions. Irradiating contain...

Plants of the genus Polyscias (the family Araliaceae) are represented as perennial shrubs and commonly cultivated in southeastern Asia Pacific regions. Pharmacological studies revealed that crude extracts their isolated compounds exhibited a variety biological activity, such antibacterial, antifungal, cytotoxic, immuno-stimulant, wound healing anti-asthmatic activities. For first time, phytoche...