2,4-diaminobutyric acid derivative and preparation method thereof

The invention relates to a 2,4-diaminobutyric acid derivative and a preparation method thereof and relates to the field of medicine synthesis. An aspartic acid derivative serves as an initiator, and the 2,4-diaminobutyric acid derivative is obtained through simple reduction and substitution reaction. Different from the prior art, a reagent adopted for the method is small in toxicity, reaction conditions are mild, requirements for a device are not high, synthesis steps are simple, the 2,4-diaminobutyric acid derivative can be obtained at a high total yield, and the 2,4-diaminobutyric acid derivative facilitates large-scale industrial production and can be well applied to medicine synthesis.