Quasiquote interpret tree content instead of taking as literal

Can you please explain why the two usages of Scala quasiquote below give different output between result1 and result2? Is it possible to reproduce result3 using quasiquote? i.e parse a string content and evaluate it?

import scala.tools.reflect.ToolBox
import scala.reflect.runtime.universe._

val miniSrc = "val lst = (1 to 5).toList ; val sum = lst.foldLeft(0)(_ + _); sum"

val tree1 = q"$miniSrc"
//tree1: reflect.runtime.universe.Tree = "val lst = (1 to 5).toList ; val sum = lst.foldLeft(0)(_ + _); sum"

val tree2 = q"val lst = (1 to 5).toList ; val sum = lst.foldLeft(0)(_ + _); sum"
//tree2: reflect.runtime.universe.Tree =
//{
//  val lst = 1.to(5).toList;
//  val sum = lst.foldLeft(0)(((x$1, x$2) => x$1.$plus(x$2)));
//  sum
//}

val tb = scala.reflect.runtime.currentMirror.mkToolBox()
val result1 = tb.eval(tree1)
//result1: Any = val lst = (1 to 5).toList ; val sum = lst.foldLeft(0)(_ + _); sum

val result2 = tb.eval(tree2)
//result2: Any = 15

val result3 = tb.eval(tb.parse(miniSrc))
//result3: Any = 15