| ²é¿´: 1123 | »Ø¸´: 1 | |||
| ±¾Ìû²úÉú 1 ¸ö ·ÒëEPI £¬µã»÷ÕâÀï½øÐв鿴 | |||
[½»Á÷]
ÇóÓ¢ÎÄ·Ò룬½¹¼±£¡
|
|||
| Here we wish to report a convenient alternative synthesis of the diazospiro system by adding trimethysilyl cyanide to (1a) in the presence of catalytic amounts of zinc iodide to give the adduct 2iodide to give the adduct (2£©(7,8), which was reduced with LAH to give the amino alcohol (3), and subsequently ring closed with triphosgene to give the desired compound (4a) in 72% yield from (3). Using the same technique we also converted 1- (2-phenylethyl)-4-piperidone (1b) to Fenspiride (4b),a bronchodilator blocker (9,10). |
» ²ÂÄãϲ»¶
¹ú×ÔÈ»ÆÀÉóÒâ¼û
ÒѾÓÐ8È˻ظ´
¹ú×ÔÈ»ÃæÉϸ´ÅÌ~»¶ÓÌÖÂÛ
ÒѾÓÐ14È˻ظ´
ϵͳ²é²»µ½
ÒѾÓÐ11È˻ظ´
ÓжàÉÙÈËÊǽñÌì²éϵͳ֪µÀ½á¹ûµÄ£¿
ÒѾÓÐ18È˻ظ´
Ϊʲô×ÊÖúÊý¸÷´ó¸ßУ¶¼´´Ð¸ߣ¬×Ô¼ºÉêÇëÔõô¾ÍÕâôÄÑ
ÒѾÓÐ12È˻ظ´
ÓÐûÓÐÈÔûÊÕµ½ÐÅÏ¢µÄ
ÒѾÓÐ3È˻ظ´
µ¼Ê¦Í²ۣºÎÒÔõô̯ÉÏÁËÕâô¸ö¼«Æ·Ñо¿Éú£¡
ÒѾÓÐ8È˻ظ´
»ù½ð²»ÖУ¬¹²Ãã
ÒѾÓÐ11È˻ظ´
Â鷳ר¼ÒÃÇ¿´¿´ÆÀίÃǵÄÒâ¼û£¨F¿ÚÃæÉÏ£©
ÒѾÓÐ9È˻ظ´
2026ÄêÒ¶ÆóËï»ù½ð
ÒѾÓÐ6È˻ظ´
°®ÓëÓêÏÂ
ÈÙÓþ°æÖ÷ (Ö°Òµ×÷¼Ò)
- ·ÒëEPI: 283
- Ó¦Öú: 10 (Ó×¶ùÔ°)
- ¹ó±ö: 3.592
- ½ð±Ò: 33341.6
- Ìû×Ó: 4644
- ÔÚÏß: 1456.1Сʱ
- ³æºÅ: 535832
houlu666(½ð±Ò+5, ·ÒëEPI+1): лл¸ßÊÖ£¡£¡ 2011-01-18 17:09:42
| ÎÄÕÂÖÐÎÒÃDZ¨µÀÁËÒ»ÖÖÑ¡ÔñÐԺϳɶþßòÂÝ»·µÄ¼ò½à·½·¨£¬ÔÚ´ß»¯Á¿µÄµâ»¯Ð¿£¨µâ¹©Ì壩µÄ´æÔÚÏ£¬¼ÓÈëÈý¼×»ù¹èÇ裬·´Ó¦µÃµ½¼Ó³ÉÎï2£¨7£¬8£©£¬È»ºóÔÚLAHµÄ»¹Ôϵõ½°±»ù´¼£¨3£©£¬½Ó×Å£¨3£©ºÍ¹âÆø»·ºÏµÃµ½ËùÐèµÄ»¯ºÏÎ4a£©£¬¸Ã²½²úÂÊ72%¡£Ê¹ÓÃÏàͬµÄ·½·¨½«1-£¨2-±½ÒÒ»ù£©-4-ßßà¤Íª£¨1b£©×ª»¯³ÉFenspide£¬Ò»ÖÖÖ§Æø¹ÜÀ©ÕÅÒ©ÎïµÄºÏ³ÉÆö¿é£¡ |
2Â¥2011-01-18 16:33:28









»Ø¸´´ËÂ¥