✍ Scribed by Gary E. Martin; Chad E. Hadden
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ChemInform is a weekly Abstracting Service, delivering concise information at a glance that was extracted from about 100 leading journals. To access a ChemInform Abstract of an article which was published elsewhere, please select a “Full Text” option. The original article is trackable via the “References” option.
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Accordion excitation provides the means of sampling a broad range of potential long-range heteronuclear couplings in a single experiment. Two long-range heteronuclear experiments, ACCORD-HMBC and IMPEACH-MBC, have been developed thus far that offer accordion excitation. The results obtained with the
## Abstract Long‐range ^1^H‐^15^N heteronuclear correlation pathways in the alkaloid vincamine, a structural constituent or biogenetic congener of numerous __Vinca__ alkaloids, are reported. Correlations were observed through the use of the GHNMQC (Gradient‐enhanced Hydrogen‐Nitrogen Multiple Quant
Delavirdine is a novel BHAP [ bis(heteroaryl)piperazine ] RT (reverse transcriptase) inhibitor in the Ðnal stages of development for treatment of human AIDS (acquired immuno deÐciency syndrome). The assignment of the six unique nitrogen resonances in the molecule and its 5-aminoindole precursor are
## Abstract Long‐range ^1^H^15^N heteronuclear shift correlation experiments at natural abundance are becoming more routinely utilized in the characterization of unknown chemical structures from a diverse range of sources including natural products and pharmaceuticals. Apart from the inherent chal
## Abstract A 3D ^1^H–^13^C–^1^H refocused INEPT transfer experiment is proposed in which the initial coherence transfer of ^1^H longitudinal to ^13^C transverse magnetization is tuned to the long‐range ^1^H, ^13^C couplings while the reverse INEPT component transfers the magnetization to the direc