²é¿´: 662  |  »Ø¸´: 5

moonface551

¾èÖú¹ó±ö (СÓÐÃûÆø)

[ÇóÖú] ÎÄÕÂÐÞ»Ø ÇóÖúÒ»¸öÎÊÌ⣬´ó¼Ò°ïæ°¡£¡

Éó¸åÈËÌá³öÒ»¸öÎÊÌ⣺The structure elucidation based on the 2D NMR also did not unambiguously determine the position of the methoxy.

ÎҵĻشðÈëÏ£¬Ï£Íû´ó¼Ò¸ø¿´¿´ÎÒµÄÓ¢Îıí´ïÊÇ·ñÕýÈ·Çå³þ
As far as we known, the position of the methoxy is usually determined by HMBC spectrum. The methoxy group was attached to which position according to the correlations of H (-OCH3) with which C. The correlation signal is the strongest when H and C are interval of three bonds. Here, we added an amplified HMBC spectrum (Figure S8) in supplementary material to illustrate this question. In Figure S8, there were strong correlations of H (¦Ä 3.78, 3H, s) with C-6' (151.6), H (¦Ä 3.90, 3H, s) with C-7' (154.2), H (¦Ä 3.86, 3H, s) with C-4 (154.4) and H (¦Ä 3.99, 3H, s) with C-7 (149.2). The results allowed four methoxy groups (methoxy protons at ¦Ä 3.78, ¦Ä 3.90, ¦Ä 3.86, ¦Ä 3.99) to be attached to C-6', C-7', C-4 and C-7, respectively.
ͼʡÂÔÁË
ÖмäÎÒÏë±í´ï£¬HMBCÆ×Öм×Ñõ»ùµÄÇâÓëÄĸöCÓÐÏà¹Ø£¬¾Í˵Ã÷¼×Ñõ»ùÁ¬½ÓÔÚÄĸöCÉÏ£¬¼ä¸ô3¸ö¼üµÄÏà¹Ø×îÇ¿¡£

[ Last edited by moonface551 on 2012-12-18 at 15:35 ]
»Ø¸´´ËÂ¥

» ²ÂÄãϲ»¶

» ±¾Ö÷ÌâÏà¹Ø¼ÛÖµÌùÍÆ¼ö£¬¶ÔÄúͬÑùÓаïÖú:

ÒÑÔÄ   »Ø¸´´ËÂ¥   ¹Ø×¢TA ¸øTA·¢ÏûÏ¢ ËÍTAºì»¨ TAµÄ»ØÌû

moonface551

¾èÖú¹ó±ö (СÓÐÃûÆø)

ÔõôûÈËÄØ£¬¶¥Ò»ÏÂ
2Â¥2012-12-18 15:55:05
ÒÑÔÄ   »Ø¸´´ËÂ¥   ¹Ø×¢TA ¸øTA·¢ÏûÏ¢ ËÍTAºì»¨ TAµÄ»ØÌû

moonface551

¾èÖú¹ó±ö (СÓÐÃûÆø)

ΪʲôûÈ˰ïæ
3Â¥2012-12-18 18:03:17
ÒÑÔÄ   »Ø¸´´ËÂ¥   ¹Ø×¢TA ¸øTA·¢ÏûÏ¢ ËÍTAºì»¨ TAµÄ»ØÌû

nono2009

³¬¼¶°æÖ÷ (ÎÄѧ̩¶·)

No gains, no pains.

ÓÅÐãÇø³¤ÓÅÐãÇø³¤ÓÅÐãÇø³¤ÓÅÐãÇø³¤ÓÅÐã°æÖ÷

¡¾´ð°¸¡¿Ó¦Öú»ØÌû

¸Ðл²ÎÓ룬ӦÖúÖ¸Êý +1
ÄãÕâ¸öÎÊÌâ̫רҵÁË£¬µ½Ïà¹Ø×¨Òµ°æÈ¥½»Á÷¸üºÏÊÊ¡£ÕâÀïÖ÷Òª½»Á÷Ͷ¸åÖеĹ²ÐÔÎÊÌâ
4Â¥2012-12-18 18:59:37
ÒÑÔÄ   »Ø¸´´ËÂ¥   ¹Ø×¢TA ¸øTA·¢ÏûÏ¢ ËÍTAºì»¨ TAµÄ»ØÌû

googleuboy

ľ³æ (ÖªÃû×÷¼Ò)

¡¾´ð°¸¡¿Ó¦Öú»ØÌû

¸Ðл²ÎÓ룬ӦÖúÖ¸Êý +1
̫רҵÁË£¬ÉÙ²¿·ÖÈ˲Ŷ®ÄãµÄ
UUUUUUUUUUUUUUU
5Â¥2012-12-18 19:41:14
ÒÑÔÄ   »Ø¸´´ËÂ¥   ¹Ø×¢TA ¸øTA·¢ÏûÏ¢ ËÍTAºì»¨ TAµÄ»ØÌû

moonface551

¾èÖú¹ó±ö (СÓÐÃûÆø)

ºÃµÄ£¬ÎÒÈ¡ÏûÇóÖú£¬Ð»Ð»´ó¼Ò
6Â¥2012-12-18 21:22:30
ÒÑÔÄ   »Ø¸´´ËÂ¥   ¹Ø×¢TA ¸øTA·¢ÏûÏ¢ ËÍTAºì»¨ TAµÄ»ØÌû
Ïà¹Ø°æ¿éÌø×ª ÎÒÒª¶©ÔÄÂ¥Ö÷ moonface551 µÄÖ÷Ìâ¸üÐÂ
×î¾ßÈËÆøÈÈÌûÍÆ¼ö [²é¿´È«²¿] ×÷Õß »Ø/¿´ ×îºó·¢±í
[¿¼ÑÐ] 281Çóµ÷¼Á£¨0805£© +14 ÑÌÏ«Ò亣 2026-03-16 25/1250 2026-03-20 15:47 by yuncha
[¿¼ÑÐ] 265Çóµ÷¼Á +8 ÁºÁºÐ£Ð£ 2026-03-17 8/400 2026-03-20 14:40 by 27µÀ¿ÆÌØ
[¿¼ÑÐ] 0817 »¯Ñ§¹¤³Ì 299·ÖÇóµ÷¼Á ÓпÆÑо­Àú ÓжþÇøÎÄÕ +21 rare12345 2026-03-18 21/1050 2026-03-20 14:31 by ÎÞи¿É»÷111
[¿¼ÑÐ] ²ÄÁÏѧ˶297ÒѹýËÄÁù¼¶Çóµ÷¼ÁÍÆ¼ö +6 adaie 2026-03-19 6/300 2026-03-20 14:12 by ÐÇ¿ÕÐÇÔÂ
[¿¼ÑÐ] 279·ÖÇóµ÷¼Á Ò»Ö¾Ô¸211 +9 chaojifeixia 2026-03-19 10/500 2026-03-20 12:29 by lature00
[¿¼ÑÐ] ²ÄÁÏ080500µ÷¼ÁÇóÊÕÁô +6 Ò»¿Åmeteor 2026-03-13 6/300 2026-03-20 10:41 by EBSD
[¿¼ÑÐ] 329Çóµ÷¼Á +6 ÏëÉÏѧ߹߹ 2026-03-19 6/300 2026-03-20 09:00 by ÿÌìÖ»°ÚһС»á
[ÂÛÎÄͶ¸å] ÉêÇë»Ø¸åÑÓÆÚÒ»¸öÔ£¬±à¼­Í¬ÒâÁË¡£µ«ÏµÍ³ÉϵÄʱ¼äû±ä£¬¸ø±à¼­ÓÖдÓʼþÁË£¬Ã»»Ø¸´ 10+3 wangf9518 2026-03-17 4/200 2026-03-19 23:55 by babero
[¿¼ÑÐ] 0703»¯Ñ§µ÷¼Á £¬Áù¼¶Òѹý£¬ÓпÆÑо­Àú +12 êØÎõÙâ 2026-03-15 12/600 2026-03-19 19:42 by maocaozhuxi
[¿¼ÑÐ] ²ÄÁÏ¿¼Ñе÷¼Á +3 xwt¡£ 2026-03-19 3/150 2026-03-19 11:22 by wãåÑôw
[¿¼ÑÐ] 328Çóµ÷¼Á£¬Ó¢ÓïÁù¼¶551£¬ÓпÆÑо­Àú +4 ÉúÎ﹤³Ìµ÷¼Á 2026-03-16 12/600 2026-03-19 11:10 by ÉúÎ﹤³Ìµ÷¼Á
[¿¼ÑÐ] 328Çóµ÷¼Á£¬Ó¢ÓïÁù¼¶551£¬ÓпÆÑо­Àú +3 ÉúÎ﹤³Ìµ÷¼Á 2026-03-17 7/350 2026-03-18 20:41 by Wangjingyue
[¿¼ÑÐ] 297Çóµ÷¼Á +8 Ï·¾«µ¤µ¤µ¤ 2026-03-17 8/400 2026-03-18 14:30 by laoshidan
[¿¼ÑÐ] 0703»¯Ñ§µ÷¼Á +3 ÄÝÄÝninicgb 2026-03-17 3/150 2026-03-18 10:29 by macy2011
[¿¼ÑÐ] 301Çóµ÷¼Á +9 yyÒªÉϰ¶Ñ½ 2026-03-17 9/450 2026-03-18 08:58 by Î޼ʵIJÝÔ­
[¿¼²©] 26²©Ê¿ÉêÇë +3 1042136743 2026-03-17 3/150 2026-03-17 23:30 by ÇáËɲ»ÉÙËæ
[¿¼ÑÐ] 308Çóµ÷¼Á +4 ÊÇLupa°¡ 2026-03-16 4/200 2026-03-17 17:12 by ruiyingmiao
[¿¼ÑÐ] Ò»Ö¾Ô¸ËÕÖÝ´óѧ²ÄÁϹ¤³Ì£¨085601£©×¨Ë¶ÓпÆÑо­ÀúÈýÏî¹ú½±Á½¸öʵÓÃÐÍרÀûÒ»ÏîÊ¡¼¶Á¢Ïî +6 ´ó»ðɽС»ðɽ 2026-03-16 8/400 2026-03-17 15:05 by ÎÞи¿É»÷111
[ÂÛÎÄͶ¸å] ÓÐûÓдóÀз¢Ð¡ÂÛÎÄÄÜ´øÎÒ¸ö¶þ×÷ +3 ÔöÈñ©ÈË 2026-03-17 4/200 2026-03-17 09:26 by xs74101122
[¿¼ÑÐ] 326Çóµ÷¼Á +4 ŵ±´¶û»¯Ñ§½±êéê 2026-03-15 7/350 2026-03-16 17:11 by ŵ±´¶û»¯Ñ§½±êéê
ÐÅÏ¢Ìáʾ
ÇëÌî´¦ÀíÒâ¼û