Synthesis of prostaglandin A2 through reaction of 3-endo-bromotricyclo[3.2.0.0]heptan-6-one with a cuprate reagent
作者:Mark A. W. Finch、Stanley M. Roberts、Geoffrey T. Woolley、Roger F. Newton
DOI:10.1039/p19810001725
日期:——
converting the ketone (5) into the unsaturated lactone (8) were discovered. The lactone (8) was converted into the hydroxyaldehyde (9)en route to 9-deoxa-9,10-didehydroprostaglandin D2(10) and into prostaglandinA2(12)via the γ-lactone (11).
溴酮(4)与铜酸盐试剂(2)反应,得到降冰片酮(5)。发现了将酮(5)转化为不饱和内酯(8)的两种方法。内酯(8)转化成羟基醛(9)途中到9 deoxa -9,10- didehydroprostaglandin d 2(10)并且进入前列腺素A 2(12)经由所述γ -内酯(11)。
Factors influencing the regioselectivity of reactions involving organocuprate reagents and allyl acylates: synthesis of some phenylthioprostanoids
作者:Stanley M. Roberts、Geoffrey T. Wooley、Roger F. Newton
DOI:10.1039/p19810001729
日期:——
The lactone (4) reacted with the cuprate reagents (5) and (6) under standard conditions to give mainly the products (8) and (12) respectively derived from an SN′anti-process Under the same conditions the lactone (15) reacted with the cuprate reagents (5) and (6) through the SN2 mode primarily to give as the major products the acids (23) and (19) respectively. The compounds (15), (19), and (23) were
内酯(4)在标准条件下与铜酸盐试剂(5)和(6)反应,主要得到分别来自S N '反过程的产物(8)和(12)在相同条件下内酯(15 )通过S N 2模式与铜酸盐试剂(5)和(6)反应,主要分别得到酸(23)和(19)作为主要产物。将化合物(15),(19)和(23)转化为相应的前列腺素A 2类似物(18),(22)和(26)。
A novel 3-endo-protected hydroxyl-tricyclo[3,2,0,0.sup.2,7 ]-heptan-6-one is described which can be alkylated stereospecifically to give a 5-endo-protected hydroxyl-bicyclo [2,2,1]heptan-2-one which may then be converted via a sequence of reactions into prostaglandins of the F-series having a protecting group at the 9-position. The synthesis of the tricyclo[3,2,0,0.sup.2,7 ]heptan-6-one is also described.