Acetyl Chloride‐Mediated Mild and Chemoselective Attachment and Removal of Tetrahydropyranyl (THP) Group.

Yeom, Chang-Eun; Shin, Yong Je; Kim, B. Moon

doi:10.1002/chin.200721042

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2011

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“…Acetyl chloride-mediated THP protection and deprotection of hydroxyl functional groups on a wide range of aliphatic and aromatic systems has been reported [ 15 ]. We have extended the concept to 6-chloropurine and found acetyl chloride to be a versatile clean inexpensive deprotective agent in methanol medium for the THP removal.…”

Section: Resultsmentioning

confidence: 99%

Synthesis and Cytotoxic Activity of Some New 2,6-Substituted Purines

Kode

Phadtare

2011

Molecules

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A seriesof twenty four acyclic unsaturated 2,6-substututed purines 5a-20b were synthesized. These compounds were evaluated for cytotoxic activity against NCI-60 DTP human tumor cell line screen at 10µM concentration. N9-[(Z)-4'-chloro-2'-butenyl-1'-yl]-2,6-dichloropurine(5a), N9-[4'-chloro-2'-butynyl-1'-yl]-2,6-dichloropurine(10a), N9-[(E)-2',3'-dibromo-4'-chloro-2'-butenyl-1'-yl]-6-methoxypurine(14) and N9-[4'-chloro-2'-butynyl-1'-yl]-6-(4-methoxyphenyl)-purine(19) exhibited highly potent cytotoxic activity with GI50 values in the 1–5 µM range for most human tumor cell lines. Other compounds exhibited moderate activity.

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Section: Resultsmentioning

confidence: 99%