The present invention provides an early insulin secretion stimulator consisting of a triterpene represented by the following general formula (1) and/or a triterpene represented by the following general formula (2).
[where R1 represents COOH, etc., R11 and R12 represent CH2OH, etc., X1 represents hydrogen or OH and X11, X12, X21 and X22 represent OH, etc.]
The present invention provides early insulin secretion stimulators consisting of triterpenes represented by the following general formula (1) and/or triterpenes represented by the following general formula (2).
[where R
1
represents COOH, etc., R
11
and R
12
represent CH
2
OH, etc., X
1
represents hydrogen or OH and X
11
, X
12
, X
21
and X
22
represent OH, etc.]