5.How to distinguish A and B 6.How to distinguish A and B Choosing a structure by HMBC 7.How to distinguish A and B 森有 流 Most Protons Were Omited for the Clearity Choosing a skeleton by HMBC 从某一豆科植物中分离出一化合物，分子式为 Cw,0,m192.04.根据下列信息 准断其可能的 结构 H-NMR H 滋如 IH8 442 OGlc OCH3 A O OCH3 OGlc B O 1 2 3 4 5 6 2 5 6 5. How to distinguish A and B 443 OAc OAc O H HO AcO O CH3 O O OAc OAc O H HO AcO O H3C O O A B 10 9 10 9 6. How to distinguish A and B 444 Choosing a structure by HMBC Most Protons Were Omited for the Clearity OAc OAc O H HO AcO O CH3 O O OAc OAc O H HO AcO O H3C O O A B 10 9 10 9 445 OAc OAc O H HO AcO O H3C O O OAc OAc O H AcO O H3C O O HO A B 1 11 14 1 11 14 17 17 7. How to distinguish A and B 446 Choosing a skeleton by HMBC H C OAc OAc O H HO AcO O H3C O O OAc OAc O H AcO O H3C O O HO A B 1 11 14 1 11 14 17 17 447 从某一豆科植物中分离出一化合物， 分子式为 C10H8O4 m/z: 192.04. 根据下列信息， 推断其可能的 结构。 J=10 Hz J=10 Hz 3H 1H 1H 1H 1H 7 6 5 4 3 1H-NMR