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liuanan

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markar: ½ð±Ò+1, ¸Ðл»ØÌû½»Á÷ 2012-08-28 15:33:57
yuzaifei: ½ð±Ò+6, ¡ï¡ï¡ï¡ï¡ï×î¼Ñ´ð°¸, лл£¬ÎÒ×Ðϸ¿´Ò»ÏÂÎÄÏ× 2012-08-28 22:17:58
2012 J Mater Chem
ÌâÄ¿£ºBiological stimuli responsive drug carriers based on keratin for triggerable drug delivery
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2.3. Preparation of core-crosslinked keratin-g-PEG
nanoparticles and DOX-loaded nanoparticles
ÎÄ×Ö±íÊö£ºThe crosslinking procedure proceeded for 24 h at 45 C with DMSO (10%, v/v) as the oxidant.
DMSOÑõ»¯»úÀíÎÒÒ²²»Á˽⣬ǰÁ½ÌìÕýºÃ¿´µ½Õâ¸ö¶«Î÷£¬Ò²ÊǵÚÒ»´ÎÖªµÀDMSO¶ÔÛÏ»ùÓÐÑõ»¯×÷Ó㬸øÂ¥Ö÷Ò»¸ö²Î¿¼¡£
6Â¥2012-08-28 15:05:10
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ºìÖÛÁ÷ÐÇ: ½ð±Ò+1, ר¼Ò¿¼ºË, ¸Ðл½»Á÷»ØÌû£¬µ«ÊǶþ¡¢ÈýÂ¥ÄãÁ½Ë­¶ÔË­´íÎҾͲ»ÖªµÀÁË 2012-08-27 20:33:49
yuzaifei: ½ð±Ò+2, ¡ïÓаïÖú, лл²ÎÓë 2012-08-28 22:15:08
The best way is to make a model reaction.
Of course make the reaction using DMSO-D6 as solvent in a NMR tube.
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2Â¥2012-08-27 16:24:31
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ºìÖÛÁ÷ÐÇ: ½ð±Ò+1, ר¼Ò¿¼ºË, ¸Ðл½»Á÷»ØÌû£¬µ«ÊǶþ¡¢ÈýÂ¥ÄãÁ½Ë­¶ÔË­´íÎҾͲ»ÖªµÀÁË 2012-08-27 20:34:00
yuzaifei: ½ð±Ò+2, ¡ïÓаïÖú, лл£¬Ò²ÌṩÁËÒ»ÖÖ¿ÉÄÜÐÔ 2012-08-28 22:15:36
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3Â¥2012-08-27 16:42:44
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aircraftvip

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ºìÖÛÁ÷ÐÇ: ½ð±Ò+1, Ó¦ÖúÖ¸Êý+1, ר¼Ò¿¼ºË, ˵ûÓÐÏÔÖøÑõ»¯£¬µ«ÊÇDMSO¶ÔÓÚÑõ»¯Ô­ÀíÓÖÊÇʲô£¿@liuanan 2012-08-28 09:23:26
yuzaifei: ½ð±Ò+4, Èç´ËѧÊõ£¬ËäÈ»²»ÊǺÜÓÐÓã¬Ò²¹ÄÀøÒ»Ï 2012-08-28 22:16:05
ÒýÓûØÌû:
3Â¥: Originally posted by liuanan at 2012-08-27 16:42:44
ÎÒ¾õµÃ²»ÐУ¬ÎҼǵÃDMSO¶ÔÛÏ»ùÓÐÑõ»¯×÷Ó㬹Èë׸ÊëļÓÈëÖ®ºó×Ô¼º¾Í»á±»Ñõ»¯Éú³É¶þÁò¼üÁ˰É

One original paper was J. Org. Chem., 41(11), 2061 - 2064 (1976).

It says the oxidation process worked in the presence small amount of bromine or Hydrogen bromide as catalyst, at high temperature as 180¡ãC, in the presence of water.

"Further, Lipton and Bodwel14 have reported that cystine is oxidized to cysteic  acid  by  minor  amounts  of  MezSO  under  conditions
used for the acid-catalyzed hydrolysis of proteins."

I still think the best way is to make a conclusion after practical evidence. Since nobody could tell whether the oxidation would be significant if some of the conditions (temperature, pH, catalyst...) were changed.
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4Â¥2012-08-28 03:09:43
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