content_image/905277.jpg content_image/905289.jpg content_image/905292.jpg
<img src='content_image/905277.jpg'>

After 10 g of a compoundA-13a was dissolved in 200 mL of methanol and 8.0 g of triphenylsulfonium bromide was added thereto, and the mixture was stirred for 4 hours at room temperature. After 200 mL of ethyl acetate and 200 mL of distilled water were added to the obtained reaction solution, the obtained solution was moved to a separating funnel and the aqueous layer was removed. Thereafter, the organic layer was washed with 200 mL of distilled water for three times, and then a solvent of the organic layer was distilled off at reduced pressure to obtain 14.9 g of a compound (A-13). 

$^{1}$H-NMR (CDC1$_{3}$ : ppm) Ii: 1.32 (9H, s), 3.36 (6H, s), 4.64 (4H, s), 7.46 (2H, s), 7.76-7.65 (15H, m). 

## Synthesis Example 5: Synthesis of Compound (A-17) 

<img src='content_image/905289.jpg'>

After 10 g of a compoundA-17a was dissolved in 200 mL of methanol and 7.7 g of triphenylsulfonium bromide was 60 added thereto, and the mixture was stirred for 4 hours at room temperature. After 200 mL of ethyl acetate and 200 mL of distilled water were added to the obtained reaction solution, the obtained solution was moved to a separating funnel and the aqueous layer was removed. Thereafter, the 65 organic layer was washed with 200 mL of distilled water for three times, and then a solvent of the organic layer was 

-continued 

[Chem. 106] 

distilled off at reduced pressure to obtain 14.8 g of a compound (A-17). 

## Synthesis Example 6: Synthesis of Compound (A-25) 

<img src='content_image/905292.jpg'>

After 10 g of a compound (A-25a) was dissolved in 200 mL of methanol and 6.1 g of triphenylsulfonium bromide was added thereto, and the mixture was stirred for 4 hours at room temperature. After 200 mL of ethyl acetate and 200 mL of distilled water were added to the obtained reaction solution, the obtained solution was moved to a separating funnel and the aqueous layer was removed. Thereafter, the organic layer was washed with 200 mL of distilled water for three times, and then a solvent of the organic layer was distilled off at reduced pressure to obtain 17 .7 g of a compound (A-25). 

$^{1}$H-NMR (CDC1$_{3}$ : ppm) Ii: 3.42 (6H, s), 4.61 (4H, s), 7.85-7.68 (15H, m), 8.19 (2H, s). 

## <Synthesis of Another Compound (A)> 

The other compound (A) shown in Table 1 was synthe› sized using the same method as a synthetic method of the compound (A) described above. 

## <Reference Compound> 

For comparison, compounds (R-1) and (R-2) shown in Table 1 were used. 

[Chem. 107] 

