labda-8,13-dien-15-oic acid methyl ester | 953076-09-0

• 分子结构分类: 有机化合物 - 脂质和类脂质分子 - 异戊烯醇脂质
• 英文名称: labda-8,13-dien-15-oic acid methyl ester
• CAS: 953076-09-0
• 化学式: C₂₁H₃₄O₂
• 分子量: 318.5
• InChiKey: VJDUZGKUUAAMCP-GHTZIAJQSA-N

计算性质

• 辛醇/水分配系数(LogP)：
  5.83
• 重原子数：
  23.0
• 可旋转键数：
  4.0
• 环数：
  2.0
• sp3杂化的碳原子比例：
  0.76
• 拓扑面积：
  26.3
• 氢给体数：
  0.0
• 氢受体数：
  2.0

反应信息

• 作为反应物：
  描述：

  labda-8,13-dien-15-oic acid methyl ester 在 二异丁基氢化铝 、 戴斯-马丁氧化剂 、 lithium hexamethyldisilazane 作用下， 以 四氢呋喃 、 二氯甲烷 、 甲苯 为溶剂， 反应 5.67h， 生成 (2R,3E,5E)-8-[(4aS,8aS)-2,5,5,8a-tetramethyl-3,4,4a,6,7,8-hexahydronaphthalen-1-yl]-2,6-dimethylocta-3,5-dienal
  参考文献：
  名称：

  Natural product synthesis from (8aR)- and (8aS)-bicyclofarnesols: synthesis of (+)-wiedendiol A, (+)-norsesterterpene diene ester and (−)-subersic acid

  摘要：

  Both enantiomers (8aR)-7 and (8aS)-7 of bicyclofarnesol were synthesized from the enzymatic resolution products (1R,4aR,8aR)-1,2,3,4,4a,5,6,7,8,8a-decahydro-5,5,8a-trimethyl-2-oxo-trans-naphthalene-1-methanol-2-ethylene acetal (8aR)-5 (98% ee) and acetate of(1S,4aS, 8aS)-1,2,3,4,4a, 5,6,7,8,8a-decahydro-5,5,8a-trimethyl-2-oxo-trans-naphthalene-1-methanol-2-ethylene acetal (8aS)-6 (> 99% ee), respectively. The formal synthesis of (+)-wiedendiol 1 was achieved via a coupling reaction of an ate complex derived from 1,2,4-trimethoxybenzene with allyl bromide (8aS)-8 derived from (8aS)-7. The total synthesis of (+)-norsesterterpene diene ester 2 was achieved, based on the synthesis of (13E,10S)-alpha,beta-unsaturated aldehyde 12, derived from (8aS)-7, followed by the selective construction of the (3E,5E)-diene moiety including a C(2)-stereogenic centre in (+)-2. The total synthesis of (-)-subersic acid 3 was carried out based on a Stille coupling between allyl trifluoroacetate congener 25c, derived from (8aR)-7, corresponding to the diterpene part, and aryl stannane congener 26 in the presence of Pd catalyst and CuI as an additive. (c) 2007 Elsevier Ltd. All rights reserved.

  DOI：

  10.1016/j.tetasy.2007.07.010
• 作为产物：
  描述：

  methyl (1S,4aS,8aS)-1,2,3,4,4a,5,6,7,8,8a-decahydro-5,5,8a-trimethyl-2-oxonaphthalene-1-carboxylate 在 吡啶 、 sodium hydroxide 、 copper(l) iodide 、 potassium tert-butylate 、 三溴化磷 、 sodium hydride 、 二异丁基氢化铝 作用下， 以 四氢呋喃 、 乙醚 、 正己烷 、 二甲基亚砜 、 甲苯 为溶剂， 反应 40.17h， 生成 labda-8,13-dien-15-oic acid methyl ester
  参考文献：
  名称：

  Natural product synthesis from (8aR)- and (8aS)-bicyclofarnesols: synthesis of (+)-wiedendiol A, (+)-norsesterterpene diene ester and (−)-subersic acid

  摘要：

  Both enantiomers (8aR)-7 and (8aS)-7 of bicyclofarnesol were synthesized from the enzymatic resolution products (1R,4aR,8aR)-1,2,3,4,4a,5,6,7,8,8a-decahydro-5,5,8a-trimethyl-2-oxo-trans-naphthalene-1-methanol-2-ethylene acetal (8aR)-5 (98% ee) and acetate of(1S,4aS, 8aS)-1,2,3,4,4a, 5,6,7,8,8a-decahydro-5,5,8a-trimethyl-2-oxo-trans-naphthalene-1-methanol-2-ethylene acetal (8aS)-6 (> 99% ee), respectively. The formal synthesis of (+)-wiedendiol 1 was achieved via a coupling reaction of an ate complex derived from 1,2,4-trimethoxybenzene with allyl bromide (8aS)-8 derived from (8aS)-7. The total synthesis of (+)-norsesterterpene diene ester 2 was achieved, based on the synthesis of (13E,10S)-alpha,beta-unsaturated aldehyde 12, derived from (8aS)-7, followed by the selective construction of the (3E,5E)-diene moiety including a C(2)-stereogenic centre in (+)-2. The total synthesis of (-)-subersic acid 3 was carried out based on a Stille coupling between allyl trifluoroacetate congener 25c, derived from (8aR)-7, corresponding to the diterpene part, and aryl stannane congener 26 in the presence of Pd catalyst and CuI as an additive. (c) 2007 Elsevier Ltd. All rights reserved.

  DOI：

  10.1016/j.tetasy.2007.07.010

文献信息

• Scalable synthesis of methyl ent-isocopalate and its derivatives
  作者：Si-Kai Hua、Jing Wang、Xi-Bo Chen、Zhong-Yu Xu、Bu-Bing Zeng

  DOI：10.1016/j.tet.2010.12.008

  日期：2011.2

  was developed to prepare the tricycle diterpene intermediates 1–3 starting from commercially available (−)-sclareol. This improved approach involving four-step reactions provides large-scale (30–40 g) methyl ent-isocopalate in 61% overall yield, which could supply sufficient material for the synthesis of marine natural products containing tricyclic diterpenes.

  一种有效的和方便的合成路线的开发是为了制备三轮车二萜中间体1 - 3从商购的起始（ - ） -香紫苏醇。这种经过改进的方法涉及四步反应，可提供大规模（30–40 g）对苯二甲酸甲酯，总产率为61％，这可以为合成包含三环二萜的海洋天然产物提供足够的材料。