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Heterocyclic Compounds, 4 or More Rings

Known as: 4-ring or more heterocyclic compounds, Heterocyclic Compounds with Four or More Rings, Heterocyclic Cpds, 4 or More Rings 
A class of heterocyclic compounds that include four or more fused rings. Both aromatic or non-aromatic ring structures are included in this category.
National Institutes of Health

Papers overview

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Highly Cited
2019
Highly Cited
2019
Recently, topological quantum states of non-Hermitian systems, exhibiting rich new exotic states, have attracted great attention… Expand
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Highly Cited
2017
Highly Cited
2017
Herein, we describe how to utilize stacking interactions to achieve selective supramolecular transformation and molecular… Expand
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Highly Cited
2011
Highly Cited
2011
OBJECTIVES The mitral valve annulus naturally conforms to a saddle shape in systole. This configuration is believed to put the… Expand
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Highly Cited
2010
Highly Cited
2010
OBJECTIVE Our objective was to evaluate long-term stability of mitral repair and reverse remodeling in patients with severe… Expand
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Highly Cited
2010
Highly Cited
2010
The dynamic solution equilibria between molecular Borromean rings (BRs) and Solomon knots (SKs), assembled from transition metal… Expand
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Highly Cited
2008
Highly Cited
2008
Abstract The cycle of open ocean deep convection in the Labrador Sea is studied in a realistic, high-resolution (4 km) regional… Expand
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Highly Cited
2005
Highly Cited
2005
We investigated crystal structure relationships, phase stability and chemical bonding of the thermoelectric materials ZnSb, alpha… Expand
Highly Cited
2004
Highly Cited
2004
The effects of nutrient addition on the in situ biodegradation of polycyclic aromatic hydrocarbons in creosote contaminated soil… Expand
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Highly Cited
2002
Highly Cited
2002
The mechanisms underlying the vasodilator response to urocortin are incompletely understood. The present study was designed to… Expand
Highly Cited
1958
Highly Cited
1958
Introduction In this discussion every module over a ring R will be understood to be a left i2-module. R will always have a unit… Expand