| ²é¿´: 248 | »Ø¸´: 2 | ||
| µ±Ç°Ö÷ÌâÒѾ´æµµ¡£ | ||
| ¡¾ÐüÉͽð±Ò¡¿»Ø´ð±¾ÌûÎÊÌ⣬×÷Õßwxd0101½«ÔùËÍÄú 5 ¸ö½ð±Ò | ||
wxd0101ͳæ (СÓÐÃûÆø)
|
[ÇóÖú]
ÇóÖú·Ò룺ÌìÈ»²úÎӢÒ뺺£©
|
|
|
Two new compounds, taraxafolide (1) and (+)-taraxafolin-B (2) together with eighteen known compounds, which include one sesquiterpene, thirteen benzenoids, two indole alkaloids, one pyridine derivative and steroid mixtures were isolated and characterized from the fresh roots of Taraxacum formosanum. Structures of new compounds were determined by spectral analysis. (+)-Taraxafolin-B had the bioactive caffeic acid moiety, but its activity was weaker than ¦Á-tocopherol in DPPH radicals scavenging activity assay. ÇëÎÊ(+)-taraxafolin-B (2) ÔõÑù·Ò룬лл£¡£¡£¡ |
» ²ÂÄãϲ»¶
287·ÖÇóµ÷¼Á ÓÐרÀû¹ú½±Ò»Ö¾Ô¸¹þ¹¤´ó085406
ÒѾÓÐ4È˻ظ´
285Çóµ÷¼Á
ÒѾÓÐ7È˻ظ´
085405Èí¼þ¹¤³Ì301·ÖÇóµ÷¼Á£¬×¨Ë¶¿É¿çרҵ£¬ËÄÁù¼¶Òѹý
ÒѾÓÐ3È˻ظ´
Çóµ÷¼Á
ÒѾÓÐ5È˻ظ´
274Çóµ÷¼ÁÇóµ÷¼Á
ÒѾÓÐ3È˻ظ´
Çóµ÷¼Áµ½²ÄÁÏ
ÒѾÓÐ5È˻ظ´
²ÄÁÏ¿¼ÑÐÇóµ÷¼Á×Ü·Ö280
ÒѾÓÐ5È˻ظ´
Ò»Ö¾Ô¸Ö£ÖÝ´óѧ²ÄÁÏÓ뻯¹¤085600£¬Çóµ÷¼Á
ÒѾÓÐ27È˻ظ´
»¯¹¤Çóµ÷¼Á£¡
ÒѾÓÐ11È˻ظ´
285Çóµ÷¼Á
ÒѾÓÐ4È˻ظ´
snipher950
ľ³æ (ÕýʽдÊÖ)
- ·ÒëEPI: 3
- Ó¦Öú: 2 (Ó×¶ùÔ°)
- ½ð±Ò: 3024.6
- ºì»¨: 3
- Ìû×Ó: 797
- ÔÚÏß: 22.5Сʱ
- ³æºÅ: 522854
- ×¢²á: 2008-03-12
- ÐÔ±ð: MM
- רҵ: »¯¹¤ÏµÍ³¹¤³Ì
2Â¥2008-07-03 17:27:28
| ƒÉ‚€Ð»¯ºÏÎ taraxafolide £¨ 1 £©¼°£¨ + £© - taraxafolin -B£¨2£©ßBͬ18¸öÒÑÖª»¯ºÏÎÆäÖаüÀ¨1¸ö±¶°ëÝÆ£¬ 13 ¸ö±½ÏµÎï £¬¶þ¸ößÅßáÉúÎï¼î£¬Ò»¸ö¼×»ùßÁà¤ÑÜÉúÎïºÍÀà¹Ì´¼»ìºÏÎï´ÓÆÑ¹«Ó¢Ïʸù±»·ÖÀëºÍ¶¨ÐÔ ¡£Ð»¯ºÏÎïµÄ½á¹¹Í¨¹ý¹âÆ×·ÖÎöÈ·¶¨¡£ £¨ + £© - taraxafolin - BÊÇÓÐÉúÎï»îÐԵĿ§·ÈËá»ùÔª£¬µ«ÆäÔÚÇå³ýDPPH×ÔÓÉ»ù»îÐÔœy¶¨ÖÐÆä»îÐÔÈõÓÚ¦Á -ÉúÓý·Ó¡£ |
3Â¥2008-07-03 17:28:25














»Ø¸´´ËÂ¥