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ChemOffice.Com - CambridgeSoft

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If you want to<br />

Then click<br />

Administrator<br />

Require that any<br />

reaction center present<br />

in the query overlap<br />

with reaction centers in<br />

the target. This<br />

preference applies only<br />

to reaction searching.<br />

Reaction query<br />

must hit reaction<br />

center.<br />

Prohibit generic<br />

structures from hitting<br />

any other structures in a<br />

query.<br />

Generics hit only<br />

generics.<br />

2. Set the Tetrahedral stereo center hits:<br />

Require full-word text<br />

matching. If you do not<br />

check this box, the<br />

query will hit any<br />

matching text fragment.<br />

Require that the<br />

stereochemistry of the<br />

target structure match<br />

that of the query<br />

structure.<br />

Text: match full<br />

word only<br />

Match<br />

stereochemistry<br />

and click How to set<br />

how the<br />

stereochemistry is<br />

matched.<br />

If you want a<br />

tetrahedral<br />

stereocenter in the<br />

query to<br />

match the target exactly.<br />

match same or opposite<br />

configuration at the<br />

center of the target.<br />

Then<br />

in Tetrahedral stereo<br />

center hits, click<br />

Same.<br />

in Tetrahedral stereo<br />

center hits, click<br />

Either.<br />

Setting Stereochemical Search<br />

Preferences<br />

The Stereochemical Search Preferences dialog box<br />

is activated from the Search Details tab of the<br />

Preferences dialog box.<br />

To set Stereochemical preferences:<br />

1. Click the How button on the Search Details<br />

tab of the Preferences dialog box.<br />

The Stereochemical Search Preferences dialog<br />

box appears.<br />

match any target.<br />

match a relative<br />

relationship between<br />

centers<br />

in Tetrahedral stereo<br />

center hits, click Any.<br />

click Thick bonds<br />

represent relative<br />

stereochemistry.<br />

When Thick bonds represent relative<br />

stereochemistry box is cleared (default), thick<br />

bonds are interchangeable with hash/wedge bonds.<br />

When the box is checked, and Tetrahedral stereo<br />

328•Searching<br />

<strong>CambridgeSoft</strong><br />

Searching Procedures

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