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Synthesis of CM2SPG
The synthesis of CM2SPG with the 4 factors and 3 levels
orthogonal design L9 ( 34 ) was performed by a partially
variant of the method from reference[9 ] . Lyophilized SPG
(10 mg) was immersed by 1 mL isopropanol and the mix2
ture was kept at 40 ¡æon a rotary shaker incubator at 120
rpm for 1 h ,then certain volume (67 ,100 or 134¦ÌL) of
30 % aqueous NaOH was added and kept at 40 ¡æfor 1
h. Certain volume ( 26 , 39 or 52 ¦ÌL ) of 4 mol/ L
chloroacetic acid (CAA) was added to the mixture in a 50
¡«70 ¡æoven for 2¡«4 h ,then 20 mL distilled water was
added and the mixture was neutralized to pH 6. 5¡«7 with
0. 1 mol/ L acetic acid.
¡°¡±¡°the mixture was neutralized to pH 6. 5¡«7 with
0. 1 mol/ L acetic acid.¡±¡°¡±¡° ×îºóÕâ¾ä»°
ÕâÒ»¶ÎÔ´£º×ÔÌìÈ»²úÎïÑо¿Ó뿪·¢Nat Prod Res Dev 2006 ,18 :5552557
ÄãÖ»ÊÇÈÃËüôȼ׻ù»¯£¬Ã»±ØÒªÑо¿Á½²¿·ÖÊÇʲô°É
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