Configurational symbols

Numbering and naming of the parent structure 2-Carb-3. The Fischer projection of the acyclic form 2-Carb-4. Configurational symbols and prefixes... 

The name including the configurational symbol D rather than L. 

Carb-6.2. The anomeric reference atom and the anomeric configurational symbol (a or p)... 

The anomeric symbol a or p, followed by a hyphen, is placed immediately before the configurational symbol D or L of the trivial name or of the configurational prefix denoting the group of chiral carbon atoms that includes the anomeric reference atom. 

This is the form employed by the carbohydrate databank CarbBank, and is preferred for most purposes. Each symbol for a monosaccharide unit is preceded by the anomeric descriptor and the configuration symbol. The ring size is indicated by an italic / for furanose or p for pyranose, etc. The locants of the linkage are given in parentheses between the symbols a double-headed arrow indicates a linkage between two anomeric positions. In CarbBank, omission of a/p, D/L, or ftp means that this structural detail is not known. 

The hyphens may be omitted, except that separating the configurational symbol and the three-letter symbol for the monosaccharide. 

In the condensed form, the configurational symbol and the letter denoting ring size are omitted. It is understood that the configuration is D (with the exception of fucose and iduronic acid which are usually L) and that the rings are in pyranose form unless otherwise specified. The anomeric descriptor is written in the parentheses with the locants. 

Figure 2.15 — Variants of coupled continuous configurations and sensors accommodating an immobilized catalyst (Cat). (A) Conventional system. (B) Stopped-flow system. (C) Configuration with iterative reversal of the flow direction. (D) Open-closed circuit configuration. Symbol meanings are given in Fig. 2.14. For details, see text.

Configuration Symbol J Energy value Observed 9 Calculated 9... 

QSAR quantitative structure-activity relationships R(S) Rectus (Sinister) configurational symbols of the Cahn-Ingold-Prelog protocol RTC rat tail clip assay RTF rat tail-flick assay RTA/A rat tail-flick antagonist assay RTP rat tail pressure assay SAR structure-activity relationships sc subcutaneous SSB stereospecific binding TFA trifluoroacetic acid Ts tosyl(p-tolylsulfonyl)... 

Koga, G. Configurational symbols. Chem. Eng. News. p. 3. April 3 (1988). Peters, R. A. Biochemical light upon an ancient poison a lethal synthesis. Endeavour 13, 147-154 (1954). 

TABLE 8.2 Summary of Kic and A for eight crack configurations. Symbols in the configuration reflect the adsorbed H positions, for example, Ff means that there are six H atoms adsorbed on the bridge or B site at the crack front surface. Ah is the total number of adsorbed H atoms at the crack tip... 

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